300b tube datasheet amplifier. The 300B-Mesh is a 'long Anode' version,.
300b tube datasheet amplifier el-tubes. The transformer is built up from two coils, each consisting of 3 sections. It all depends on the working operation points of a given tube. The midrange is where the JJ Electronics 300B power tube truly excels, providing an immersive listening experience that giving life to the music. Its popularity is well deserved. I want to change over to fixed bias. Even the lowly Electro Harmonix are usually around $150+ a pair. I have also seen the negative voltage is applied directly This amplifier uses Tung-Sol 5687WA military tube as the pre-amplifier and driver stage. 5U4GB EH Dec 7, 2024 · Normally, like WE, peak Ia of AB1 application in the 300B datasheet is recommended to no more than about 200mA, and definitely there is no reference value can be found for the application of AB2 push-pull, as this tube is originally designed to work w/ negative grid only, no one would expect to use it by positive grid value. Other JJ Electronics tubes Additional Information and Downloads The TA-300B offers the ultimate vacuum tube quality that only Takatsuki Electric, the one and only vacuum tube manufacturer in Japan, can offer. Apr 28, 2015 · The circuit that I decided to follow for my 300B triode amplifier I found on this site, the 300B Single-Ended (SE) tube amplifier schematic with direct coupled 6SN7 input stage. 5 Move to a 5V filament 300B as meshplate 300B 2. 2VAC, and 6. At our factory, we have 300B amplifier units that have not been switched off for months (for testing and listening purposes). Again, these measures were off the 300b tube using the listed rec tubes. Jul 4, 2023 · Amazon. Sep 3, 2022 · I have had a 300b amp for about a month. . Oct 29, 2023 · I test three different rec tubes. Morrison's SE 300B tube amplifier circuit which I will refer to as the "original schematic". However, you can also simply leave your amp powered on, keeping the tube filaments hot. 300b mono amp(s) build almost underway. The schematic for the J. These The LM-845 Premium uses Shuguang 300B tubes in drivers, the 310A for amplifier and Shuguang 12AX7 in pre-amplification. Feb 26, 2012 · The 10Y makes an excellent driver tube for the 300B which will bring 300B amps to a complete new level in performance compared to more conventional driver tubes. The above table shows three working points from the 1930's Western Electric 300B data sheet. We have called this tube 300B25 ('25' stands for 2. 000 EUR) Thrax Libra differential balanced 300b tube preamplifier. Quantity: New amplifier designs brought the tube front and center, its customary Dec 9, 2020 · Prior to the arrival of the Air Tight, my go-to SET amp of late had been a variation of Eric Barbour’s Svetlana SV811-10 amp, a design originally published in Vacuum Tube Valley magazine in 1996 and improved upon in 1997. Can you please kindly advise me the optimum B+ levels for VT-25 and 300B tubes? As the input transformers are Hashimoto HI-6-10K (600:10K) transformers is it ok to use 100K volume control? electron Tube Data sheets 3: 300B WE T~ 300B. 27 Audio Note 4300E / 300B - £820 Psvane T-Series 300B-T Valve - 340. Brian: If its parallel 300b there are 2- one for each 300b - and if single then just one. The last working point shows 250V, 60mA, -45V bias. Jun 25, 2023 · (I still may order a new pair of Elrog 300B, just not now because of the economic uncertainty of the WGA strike). ru Website: www. . (One can use it as only a power amp by driving a dedicated pair of input jacks with a separate preamp. 47 Psvane Black Treasure 300B-Z Valve, Gold Grid - 398. Resistors are included for voltage adjustments and current limiting. The 300B tube has the bay-onet pin so located that it may also be mounted in a Western Electric 100M, 115B or similar socket. pdf (178412 bytes) 301 Osram c 301. use 5vac with the pot and Resistor/Cap on the fillement 2. com Jun 14, 2024 · Specially for amplifiers that let the 300B tubes work very hard, the EML 300B-XLS is the right product to choose. Jul 11, 2020 · Excellent 300b amplifier for the money. Matched pairs Apr 20, 2022 · The tubes are nested in their original boxes and labeled one to four (1-4), to match the tube input sockets on the amp, in other words the pairs have been pre-tested and matched. Matched pairs, quads, and octets are available In this section, we delve into the essential elements that make the 300b datasheet a valuable resource for understanding the capabilities and applications of this electronic component. Steered Current Source Technology (SCS) The perfect TA−S01 single‐ended power amplifier, powered by its own TA−300B and TA−274B tubes, has an original design that fully realizes the potential of Takatsuki vacuum tubes. Dimensions—Dimensions, outline diagrams of the tubes and bases, and the arrangement of elec See full list on emissionlabs. The TA-S01 allows the adjustment of the harmonic content, tone quality (via two coupling/bypass capacitors) and the bass (via three bypass power capacitors)…. in my ampli, I use totally AB resistors and many film capacitors. Apr 10, 2024 · Amazon. The power tube is JJ 300B and the power supply is done with RCA 5U4GB full wave rectifier tube. 5V tubes are becoming very hard to source. This tube boasts a classic 300B tube sound signature, a distinct emphasis on warmth and midrange presence. ru . 2 A Amplification Factor 3. Jun 13, 2024 · 1. KR AUDIO ELECTRONICS HI VACUUM TUBE KR 300B General data Filament specifications: DC/AC Voltage 5 V DC/AC Current 1. Setup and listening I tried the Cayin A-300B in a variety of settings, but always as an integrated amplifier. This very simple and elegant little triode amplifier is the Loftin-White Single-Ended 2A3 Tube Amplifier. 8 years after the release of the TA−300B, the amplifier with original vacuum tubes “TA−S01” was born as a new audio product of Takatsuki Electric Industry. It is a true 300B tube. Box 84 Moscow 127560 Russia. Class A amplifier - 2x48W RMS Tubes Basics | Common Replacements. May 26, 2014. com: OldChen 845-A 300B Tube Amp Hi-Fi Single-Ended Class A Integrated Tube Amplifier & Power Amp Tubes:PSVANE CV181-SE×2,PSVANE 300B-SEN×2,PSVANE 845SEC×2 (FedEx 7-10Days) : Musical Instruments Created Date: 9/6/2001 3:17:38 PM Elekit TU-8600S 300B Tube Amplifier Kit - Lundahl Version; Elekit TU-8850SE Stereo Tube Amplifier Kit; Elekit TU-8900 300B/2A3 Tube Amplifier Kit; Elekit TU-H82 Hybrid Tube Amp Kit; Model 16LM Mono Integrated Tube Amplifier; Model 8LM Mono Integrated Tube Amplifier; Model 8LS Stereo Integrated Tube Amplifier; Model PL Stereo Tube Preamplifier Oct 16, 2017 · Here is a listening experience with E80L, but that doesnt mean, that this tubes sound is comfortable in this Shishido Circuit. But it is Not a 300B! Yes, a more powerful tube has more output power at a given distortion level (like -26dBc 2nd Harmonic). datasheet D3a Telefunken; datasheet D3a Philips; The output stage tube is the Golden Dragon 4300B. F. 5V heater). In the end At first the price tag might seem a bit prohibitive, but considering the care in manufacturing that goes into these tubes, I’m going to stick my neck out and bet that the EAT 300Bs will probably last a lot longer than the others. Any suggestions would be welcome. 300B versus 300B-Mesh. Please see the substitutes at the top of the page for more details Aug 25, 2022 · Renowned tube expert Michael Boele offers his long-term review of a pair of 2021 new production 300B directly heated power triodes. An amplifier designed for the most demanding enthusiasts of 300B tube sound. This is what he said about the 6SN7 power stage and the 300B filaments: Me: I see there are 1 220uF per cathode (2 per 300B) on the Conquest, but there is only see one 220uF in the Legend (per 300B). The EH 300B tube's plate curves and static DC characteristics (plate resistance, transconductance, mu) also exactly match the originals so you can drop them into any vintage or modern 300B tube amp. These 2 tubes, Jun 2, 2004 · VT25 - 300B amp The schematics would look like this. If you're into NOS tubes, the cost will be even higher. Nov 27, 1999 · In the last two years, the available choices in 300B output tubes for one's low-wattage single-ended power amplifier have become an embarrassment of riches. The windings are arranged to minimize destructive Originality by 300B tube Manufacturer. Single tubes and matched quad sets are also available. Made by hand in the USA using original specifications. Of course you get more power, it is a higher voltage tube . EVALUATING YOUR AMPLIFIER’S COMPATIBILITY It is the end user’s responsibility to operate the Western Electric 300B in conformance with the published parameters. Schade negative feedback: When using a triode wired pentode (as this circuit does), or when using a true triode for the input tube . It is an unprecedented 300B amplifier that incorporates ideas that are not bound by fixed concepts of audio, which are unique to an amplifier manufacturer. TJ 300B Mesh Anode Globe. Very interesting Takatsuki 300B amplifier. Made by hand at the Rossville Works manufacturing facility. Please take a look at the SE 300B schematic for a description of Mr. 17 hours ago · New to tubes - need advice for 300B amp. Skip to content FREE SHIPPING on US orders over $99 International Orders $399 & Up: Use "World20" To Save $20 However, I extensively evaluated other highly regarded 300B tubes to gain a perspective on how the Western Electric 300B tubes ranked in their performance in the Super 300B SET amplifier. pdf (121747 bytes) Oct 29, 2023 · There is datasheet from Western Electric in 1935 or whatever, and there is what China is selling as a 300B and I wouldn't trust that they are identical things. datasheet 4-300B (page 1) datasheet 4-300B (page 2) datasheet 4-300B (page 3) The vacuum diodes used are the GZ34 Mullard. The Western Electric 300b tubes are pricey but this amp has such great tone and a natural sound to it I don't care that they are $1500. Mar 30, 2015 · The Complete Amplifier After powering the amp up for the first time (Photo 5), I made measurements to verify operating points and such. started manufacturing the original 300B tube “TA−300B” as a domestic audio vacuum tube in 2010. pdf (137897 bytes), 300B. Apr 11, 2022 · I am trying to compile a full list of all 300B TUBE Headphone amplifiers. The JJ ECC99 vacuum tube is used as a driver in 300B and 2A3 amps, a preamp tube, a output tube in headphone amps, just to name a few. The 300B vacuum tube was first mass produced by Western Electric in 1938. Following the 300A (1935), the 300B tube was introduced in 1938 by Western Electric for use in movie theater systems, and while in its original production it gained a great reputation for quality and longevity. Jun 24, 2024 · (like with closed amplifiers). The soundstage offers a three dimensional and vibrant realism. Since that time the 300B power tube has become possibly the most revered tube in high end hi-fi amplifiers. Jun 11, 2021 · The review goes into 2 pages on the history of Western Electric 300BHerb is using the TU-8600S with a selection of 300B tubes, Takatsuki, Linlai-Cossor, EH Gold, Psvane and US made WE 300B reissue. In simple terms, driver tube amplifies signal voltage while output tubes amplify current. In keeping with the tradition of Genalex to provide the highest quality tubes, New Sensor has released the Genalex Gold Lion PX300B audio power triode. Some 300b hum is present, but overall pretty quiet. webzone. This Valve is rather new, the units I tested where some of the first series units. Extended tube life is ensured by delayed anode voltage switching. Voice/Fax: +7-095-407-0310 E-mail: el-tubes@mtu-net. The power transformer is made by Nick from P* Audio. ) Jun 13, 2024 · So we have put the heater of the 2A3 tube inside a 300B, to get a 300B tube with heater specifications of the 2A3. In 1938, Western Electric manufactured the first type 300B electron tube. It can supply these not only via jack sockets and symmetrical 4-pin XLR connections, but now also via a 4. So it can not be used in any 300B amplifiers with very high output power. Schematic below with changes to accommodate the 300B tube. The bass management at very low frequencies is also remar-kable, out of the ordinary for a 300B tube stage. That is impossible. End User Guide. Back then SE OPTs were very difficult to find so I contacted Sowters and asked them to build me two. Svetlana P. Western Electric 91E 300B $15,000 Thomas Mayer 300B $8200 Robson Acoustics - 300B Amplifier $7000. You'll be interested to see its use in the upcoming 4th edition of "Valve Amplifiers. These are all good sounding tubes. 00 NOW SHIPPING. Cayin always use 6SN7 as driver tube when we use 300B as output tube. Available in singles, matched pairs, and matched quad sets. Important refinements over its predecessor include a MUSES72320 resistor ladder electronic volume control part. " JJ Electronic - Vacuum tubes, Capacitors, Amplifiers. 75 Psvane WE300B Western Electric Replica - £827. The same things that served moviegoers back then—low noise, ultra-long life, sonic purity and warmth—made it a standout tube for music lovers Electro-Harmonix tubes are all new designs and are of excellent quality. Mushy and soft is the last thing I would call this amp. EH tubes tend to be rugged and very reliable, I expect the 300B’s would be no exception. Nov 2, 2022 · Active music playback is the best way to burn-in your 300Bs because your amplifier will engage the tubes as fully intended. Stamou has built this amplifier with Lundahl LL1623 audio output transformers. 1) The amp can be purchased without tubes at a significant savings. Though this is no drop-in replacement for 300B, it is possible to replace a 300B with this tube, provided some things which must be checked. The physical size of this tube, inside and outside is the same as the larger 300B-XLS tubes we make, so it is larger than you may expect from a 300B. Ltd. (Check a detailed data sheet for the specs on the resistance 5AR4 Jan 18, 2004 · Tung Sol datasheet for 6S4 says 500V max. Use as improved 300B tube . In 1938 Western Electric manufactured the first type 300B electron tube. Personally, I really like the sound of my 300B based integrated. These 8W amps really express themselves on very high efficiency speakers, specially horns. In TU-8600S, the 300B tubes are heated after the indirectly-heated tubes have warmed up. The TU8900 amp's unique circuit automatically detects the triode tube installed, without any bias adjustment or settings changed by the user. To see his build, visit the DIY 300B Single-Ended-Triode (SET) Hi-Fi Amplifier project page. The glass enclosure was from the Princess 206 tube for its unmatched sonic beauty. The 300B with its rich midrange and extended bass - and 2A3 with its delicate expression and gentle tone - they offer a very special sonic experience. This preserves signal-to-noise ratio and channel ba Tube amplifiers require output transformers to match the high impedance of the power tubes to the low impedance of the loudspeaker. TRiode Base: 4-PIN CERAMIC BASE Uf = 5 V if = 1,3 A Typical Characteristics: Ua = 300 V Ug1 = -61 V ia = 60 mA S = 5,5 mA/V Ri = 700 Ω µ = 3,85 Limiting Values: Ua = 450 V Wa = 40 W Maximum plate curent of everage tube for fixed bias ia = 70 mA Maximum plate curent for manually adjusted grid bias or self-biasing ia = 100 mA Application—Audio-frequency amplifier in positions where power outputs of approximately ten watts or less are required at relatively low plate voltages. Application——Audio-frequency amplifier in positions where power outputs of approximately ten 300B: 300B. This tube has several features that that provide distinct advantages over the old DHTs. PLEASE NOTE: Tubes Sold Separately. 300B Vacuum Tube Base and Mounting These vacuum tubes employ medium, four-pin thrust type bases suitable for use in Western Electric 143B or similar sockets. I have also succesfully used the 10Y as a driver for the 45. Western Electric 300B Power Tube A truly natural-sounding triode made in a modern facility in America. Dec 9, 2011 · FU-50 is know as "little 300B", because it's sound like famous 300B. TheSvetlana 300B uses ultra-pure carbonized nickel plate material and a proprietary oxide coating on the filament to give Western Electric-like performance. Any amplifier that is trying to get as much as possible power out of a normal 300B, will benefit from the 300B-XLS. Nov 18, 2020 · The 300B is probably the most famous output tube around the DIY valve community and some of us get really annoyed from its popularity! I mean seriously, every tube fan I know has talked about the 300B! ANYWAY, I’m proud to announce you the OTSE-400NX-034 – my ULTIMATE OPT dedicated to the so renowned 300B DHT! Here the best materials are The HA300 MK2 is a Class A, single-ended triode vacuum tube headphone and speaker amplifier that pushes the envelope of tube amplification when it comes to practicality, performance, and refinement. 300B A. For the money the 300B EH tube is a fantastic tube! Be sure to read the great 300B tube review and comparison from the Wall of Sound. Quality maintained with all types of 300B Today, the 300B triodes are manufactured by Back Shop All Equipment Merchandise 300B Vacuum Tube 91E Integrated Amplifier 97A Monoblock 116C Pre-Amplifier 203C CD player Phono Termination Plugs KS13385 Hookup Wire 755A Speaker Cone Panaural Authorized Dealers 777 Midrange Driver Jul 25, 2020 · This 47 is also a beautiful tube (I play with some UX 245 in SE) ; as you, I love the DHT’s (amp & préamp). This kit use 6j8p or 6n8p as preamplifier. With the Ref 3. Features and spec: 5Z3P tube rectifier 6J8P preamplifier FU-50 power amplifier Output Power 12Wx2 Load: 4Ohm or 8Ohm Silkscreen stainless steel chasis Part List Tube and socket Dec 4, 2023 · For technical information on electron tube bias and amplifier operation, we recommend Valve Amplifiers, 4th Edition. This document provides a schematic for a D3A/300B DRD SET amplifier power supply. Grid bias for the 300B tubes is generated by a shunt-regulated bias supply PCB that I designed. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your l | 300B EH Dec 21, 2022 · It’s still full of vacuum tube goodness however, removing the graininess of solid state and replacing it with relaxed tonal beauty and fabulous timing. use a solid-state 5DC -wlth slow startup (and the pot/Res/Cap setup) It will boost the input signal to the appropriate level so that the 300B output tube will perform its second stage amplification at a very linear condition. My former amps were push pull and either EL34 or 6L6 . Nov 20, 2020 · The 300B is designed for and traditionally used in an amplifier’s power stage. Aug 13, 2012 · Hi Garbo, D3a is very good tube. A. Jan 8, 2022 · One of the more interesting announcements at the end of the 2019 was for me the all-new (50. datasheet of the GZ34 Dec 24, 2021 · The sound is the greatest thing I've ever heard. The outboard power supply chassis has two NOS 5U4GB tubes and two OB3 regulator tubes. 2. The original Western Electric type 300B electron tube for audio amplifiers. (2. doucanoe Jul 11, 2020 · Buy BoyuuRange REISONG A50 MKIII 300B HiFi Intergrated Tube Amplifier Single-end Class A Valve Amp with Tube Cage: Amplifiers - Amazon. In electronics, the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 by Western Electric to amplify telephone signals. 3 W in a 36 mm glass bulb (w/o pimple), as shown in RayTheon or Sylvania data sheets for 6688. At 8 watts this plays louder, more musical, smoother and with more crystal clear authority than any solid state or class d I've ever heard. This calls for an evaluation. 300B Western E/ecfric 300A and 300B Vacuum Tubes Classification—Moderate power, filamentary triodes for Class A service These tubes are identical except for the location of the bayonet pin in the base. 1. If you like sweet, warm and silked sound in the Jazz, Country, Instruments. I also wanted to use the C3m in this design ( and in a few new designs as well ) as this little tube is sexy and even on the datasheet it looks extremely promising, the problem with this tube is its low gain , a µ of 10 as a triode, rather relegates it more to an output power tube , maybe for a new project putting 10 in parallel and making a Jun 26, 2020 · It is a declared 4W tube in 30mm x 22mm (w/o pins) glass bulb. And since Dr. Manual. The Anodes are 25% longer as with normal 300B-Mesh we build. May 17, 2024 · 300B amplifiers are a type of tube amplifier known for their warm and natural sound quality, making them a popular choice among audiophiles and music enthusiasts. Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers. American variants are much more preferred where Pa+Pg2 = 3. 211, 845, GM70, WE Dec 30, 2020 · Author Ale Moglia Posted on December 30, 2020 Categories 300B Amp Tags 10Y, 300B Amplifier, 801a, 801a driver, 845 Amplifier, ER801a, Gyrator, gyrator PCB, hybrid mu-follower driver, LL7903, VT-25, VT-25 driver Shuguang Vacuum Tube 300B Series Triode: 300B-98 (300B) DESCRIPTION 300B-98 is compatible with 300B Vacuum tube 300B-98 is new and improved version of 300B. The 300B vacuum tube is a power triode that was originally designed for audio amplification in the 1930s and has since become a classic choice for high-fidelity audio systems. I didn't include any individual tube bias or balance adjustments, so I am using matched pairs of 300B tubes. Insert and Play; instead of insert, adjust, and Play. The four other 300B tubes used in this process were: Elrog ER300b, Sophia Electric 300B Royal Princess, Emission Labs 300B-XLS, and Shuguang Treasure 300B-Z. The input stage uses a 5670/2C51 tube. The Elekit TU-8900 300B/2A3 DIY Tube Amp Kit offers total flexibility for the serious audiophile who loves the magical sound of a great single-ended tube amp, with 300B or 2A3 tubes. This guarantees linearity and wide frequency response. For 10 months, Boele had the opportunity to live with and extensively use a pair of these 300Bs and his impressions and extensive testing could be directly contrasted with his considerable collection of 300B tubes - Chinese, Russian, Czech and Slovak clones, as 300BN is an item of HIFI Series, with the tube department of this type all adopt screen structure, lifting hook filament, gold plated pins, and the essential of tubes transplant technologies of producing PSVANE Reproducing Western Economics, it is the mid-priced 300B tube item with great cost performance. Aug 7, 2016 · I'm struggling with the 6SJ7's in my 300b amp, I'm much more comfortable with triodes. My version uses solid-state rectification and the graphite-plate SV572-10 operating at zero bias in Class A2. By analyzing the relevant details and specifications presented in the datasheet, we can gain deeper insights into the potential uses and performance of the 300b. The higher gain has a practical reason. So, what voltage on the plate at the 300b tube is best for longevity? Jan 24, 2019 · The ATM-300R ($16,995 with Electro-Harmonix 300B output tubes, $15,995 without) is the latest incarnation of a design that made its commercial debut in 1999, as the ATM-300—then as now, a single-ended amplifier that uses one 300B directly heated triode per channel to produce 8Wpc. 5mm Headphone Output,ac115 and AC230 Switchable : Electronics A list of our Tube amplifiers organized and shown by power tube type - 300B, 2A3, PX25, EL34, 6L6, KT88, KT120, KT150, 6C33C, EL84. May 23, 2016 · FU50 + 6N8P + 5Z3P Amplifier I built my first 300B SE amplifier nearly thirty years ago. Be sure to read the great 300B tube review and comparison from the Wall of Sound. Jan 3, 2022 · The biggest downside to 300B's is the cost. The amplifier designer (or the ready amplifier) may already have a good working 300B drive circuit. The effect of the tube on the amp is similar to the strings on Jul 18, 2020 · I am working on the Walton 300B amplifier. The resistor is disconnected from ground. Guaranteed with 5-year extended warranty. The unprecedented PSE structure operating in class A was built using the highest quality toroidal transformers, designed especially for this amplifier. Dec 16, 2024 · In this case they probably used the 300B over several other tubes that would work just as well because of the mystique of the 300B. Protection diodes, capacitors, and chokes are included to filter voltages. H. At first they refused, saying that SE OPTs were of antique interest only and too technically compromised for a modern hifi application. Takatsuki Electric Co. Dec 31, 2023 · It wouldn't have made sense to suggest my favourite tube, the 801A, since that hardly saw any use in commercial amplifiers, so of course I mentioned the 300B. Loftin and S. The 300B has high linearity, low noise and good reliability. It is one of the lowest-distortion tubes ever made, and is a close duplicate of the original Western Electric 300B. Single-ended tube headphone amplifier with Gold Lion 300B tubes The Cayin HA-300MK2 is the successor to the HA-300 and was specially developed as a two-part tube amplifier for high-quality headphones. from A$1,299. GE datasheet for 6S4A says 550V max. It can output 12W x 2 power, lound enough for a big room. Jul 18, 2023 · The circuit in question is the TSE-II SE amplifier with 5842 input tubes and 300B power tubes. Your site is really exciting ! Cheers. Price $80 each from El-Tubes, plus shipping import duties etc, list in US around $150 each. J. This is the stuff we all love 300B amplifiers for in the first place and the EAT tubes give you more of it. Psvane 300b tubes are nice sounding stock tubes, and the dial set a 1/3 is plenty loud. 00 Feliks audio Envy $7000 Cayin HA-300MK2 $4300 Ultrasonic Studios Telemachus $5000 Dec 29, 2020 · PSVANE Horizon Series 2A3-AT Vacuum Tube Amplifier Matched Pair (2 PACK) 1 offer from $14799 $ 147 99 PSVANE Horizon Series 12AX7-AT / ECC83 Vacuum Tube Preamp Tubes Amplifier Matched Pair (2 PACK) This new tube is using the same 300B plate(as the globe 300B) with stronger plate structure learned from making the original princess tubes. Tube glow didn’t rate much of a mention. The same aspects that served moviegoers at the time – low noise, ultra-long life, sonic purity and warmth – made the 300B tube standout for music Shuguang Vacuum Tube 300B Series Triode: 300B-98 (300B) DESCRIPTION 300B-98 is compatible with 300B Vacuum tube 300B-98 is new and improved version of 300B. The Electro-Harmonix 300B tubes are quite large and it is by far better that they are packed separately rather than socketed on the main board during shipping. C. 3VAC. The outboard power supply is connected to the amplifier via dual umbilical cables. Sakuma served only one meal, a hamburger Japanese Style. Western Electric 300b. If you bring your amp to your friends, and you forgot your meter, and he has different 300B brands, you are set to go. 04 Psvane 300B MK2 T-series, Classic Grade - £442. O. use 5vac with the Resistor/Cap on the center tap of the 5vac transformer 3. The direct-coupled (no coupling capacitors) two stage circuit was designed as a laboratory amplifier in 1929 by the team of E. If we include the souped-up versions—which, in fact, deviate from the original 1930s Western Electric (WE) specifications—the number of 300Bs to choose from now includes about 15 different brands and types. The 5670 is a very sweet sounding, particularly linear tube (important when using an output tube as linear s the 300B!) There’s enough variety of brands to make tube rolling interesting and it is not prohibitively expensive. It outputs nominally -72V for each pair of tubes. an other choice is maybe E810F, 5842/ 417A or 6C45P. The 300B Tube is still Alive! Last Update: The much admired (late) Mr. pdf (137897 bytes) 300B JJ T~ 300B. 91E Integrated Amplifier. Spanner tool (for removal and/or replacement of 300B’s) BT antenna. It uses a Edcor XPWR153-120 power transformer to provide voltages of 685VDC, 7. There are two user bias controls for 300B and 845 have been used for bias adjustment and two meters has been added to the front plate to allow you to monitor bias with ease. The 6S4 is a terrific driver tube and can even make a pretty decent output tube. It is often used in single-ended-triode (SET) audio amplifiers. Care needs to be taken to have the right bias, and also it needs to be sure the heater supply will still do 5V at the higher current of the 520B. A measurement is a measurement, no ambiguity involved. F. I did some research and found "Resistance Coupled Amplifier Charts for commonly audio voltage amplifying tubes" which has a chart for the 6SJ7 in pentode configuration, I'm not even going to attempt to figure it out in triode strapped mode yet . You could easily re-tube a EL84 based amp with a quad of 4 EL84's for less than the cost of a pair of quality 300B's. Trust me, E180F is the most damaging tube in old preamps from broadcast relay stations. So according Mar 14, 2020 · Buy Willsenton R800i 300B 805 Tube Single-Ended Class A Integrated Amp & Power Amplifier with Balanced XLR Input: Amplifiers - Amazon. 274b rec tube 408v, GZ34STR 426v and Linlai 5u4g 406v. Check the dimensions at the end of this Data sheet. It deviates from the original Western Electric specifications". mnilan. Sakuma build and played this 300B amplifier himself, in the famous Concorde restaurant in Japan, using Vaic Valve 300B tubes. After a life of solid state amps and a few class d I went to tubes first with tube headphone amplifiers and this is my first 300b speaker amplifier. If the engineering department had used a triode connected 6L6, 6EM7, 6AH4 or even a 2A3 that would work as well, the marketing department would have been very upset. Feb 16, 2011 · The input stage tube is the D3a in triode connection. If you're looking for cheap 300b SET, this Reisoing is the way to go. The output tubes used are the Svetlana 300B. 83 LM-805IA INTEGRATED TUBE AMPLIFIER - SINGLE ENDED 805 - 2X48W Datasheet. While I certainly follow with interest, you can actually get something like an Laochen 300B based amp for not that much more than a comparable EL34 SET. The plate voltages on the 300b tube measures were as follows. pdf (178412 bytes) Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. It measures 6. com: Muzishare X9 Stereo Tube Amplifier with Remote Control,Single-Ended Class A, 300B Tubes, Built-in MM Phono Stage, Power AMP, 6. Jun 13, 2024 · In all other head phones amplifiers, we recommend standard 300B, it is a very good tube also. Schaffernicht had manufacturing experience with thoriated tungsten I mentioned that a 300B, not with oxide coated filament but with thoriated tungsten, now that would be Mar 30, 2022 · Look up almost any 5AR4 data sheet for a more proper and traditional way of drawing the elements. This tube is the highest quality 300B type available and is considered to be an upgrade in any 300B amplifier. com FREE DELIVERY possible on eligible purchases Mar 10, 2021 · The price for one matched pair is $1499. 2) The amp can be purchased with Steve's (hand picked and calibrated in the actual amplifier) favorite tube complement using budget 300B tubes and a coupon for 10% off Western Electric WE300B tubes that can be used when you're ready to upgrade. It will work with all 300B amplifiers (Western Electric 300B direct replacement). ) I used the following test equipment: Fluke 87 DMM Old GE analog 2kV DC panel meter HP 334A Distortion Analyzer Instek 20MHz Dual trace O-scope The amplifier chassis has four Genalex Gold Lion 300B's tubes and three Tung Sol 6SN7 tubes. 300B EH. 00. Dec 22, 2024 · But I didn’t want to revisit the 300B or 2A3 DHT power triodes, I wanted something different and something that didn’t have the obvious drawbacks of the DHT tubes. The EML 300B-Mesh, which we talk about here, is designed to use in 300B amplifiers of low and medium-low output power only. In most designs, amp power-up starts heating both the directly heated 300B tubes (fast warm-up) as well as the indirectly-heated 12AU7 and 12AX7 (slower warm-up). TUBE AMPLIFIER HOLY GRAIL The Pursuit of the Direct Heated Triode (DHT) Direct heated triode (DHT) is the tube amplifier holy grail. , Ltd. I do have a soft spot for anything 300B related and have owned over the years more than 30 different 300B based amplifiers, preamplifiers, etc. 3 Ampere of 300B: 300B. Mar 14, 2020 · OldChen 845-A 300B Tube Amp Hi-Fi Single-Ended Class A Integrated Tube Amplifier & Power Amp Tubes:PSVANE CV181-SE×2,PSVANE 300B-SEN×2,PSVANE 845SEC×2 Feb 18, 2007 · Sadly, the A-300B has neither a balance knob nor a mono switch. 300B triode takes a new dimension, with exquisite treble and mid-range. 1 Ampere vs 1. Sep 6, 2014 · Current (new) production 300B tubes like the Electro-Harmonix 300B and the JJ 300B sound wonderful at a fraction of the Western Electric 300B price. The packaging was also nice. As you wish. Dec 5, 2021 · "Elrog's ER300B is best described as a '300B compatible' vacuum tube. You are a novice, so dont change with the wisdom of tube sound, that you could not have at this stage. Directly-heated triode tubes like the 300B and 2A3 enjoy an enduring popularity among audiophiles. 300B dimensions in mm. It was a breakthrough power triode, but at the time it hummed away from behind a curtain in early Hollywood sound systems. We have a large selection of 300B tubes in stock everyday. It is dedicated to be used in audio frequency range which requires the output power 100W. It's rendering of vocals is spooky realistic . Mr. After some investigation I finally settled on a big dual pass triode, the 6336. We recommend 300B users take extra precautions, such as implementing elastomer-isolated tube sockets, to help minimize or altogether eliminate unwelcome microphonics during operation if used as a gain stage. 77 Psvane Hi-Fi Series 300B/N Mesh Plate - £243. Please see the substitutes at the top of the page for more details Dec 10, 2023 · The Marconi company had two tube for this, the PX25A which is the low gain tube, almost a 300B, and the PX25 which was the high gain tube. Y. Choke and oversize (40W) output transformers are from Hammond. 1 cm) wide, and the anode can dissipate 40 watts thermal. The tubes may be mounted in either a vertical or horizontal Upgrade your amplifier setup with the finest electron tube ever made. “We’re honored to continue serving music listeners and amplifier designers who’ve trusted the quality of our electron tubes for years,” says CEO Charles Whitener. This 300B sounded especially good in the lively Elekit amp. Bruno Oct 29, 2023 · The 300B is the most widely-known of the triode tubes, at least in hifi circles. 1 you get the full enchilada—an integrated amplifier complete with a phonostage, gorgeous cosmetics, and excellent fit and finish. com FREE DELIVERY possible on eligible purchases Dec 19, 2005 · I'm bulding my first amp and need advice on how to heat the 300B's (and the input/driver tube as well) For the 300B, should I: 1. Takatsuki Electric Industry Co. Remote control. Sep 30, 2019 · One possible reason to change an amplifier from fixed-adjustable-bias to self-bias is if you want to do quick tube rolling . Since the amp uses fixed bias, you really need a way to measure the plate current. It was a breakthrough power triode, but in those days it hummed away from behind a curtain in early Hollywood sound systems. (See the amp circuit in Fig. 300B EH PL. C Cayin Audio’s HA-300 MKII is upon us, to ensure the modern headphone enthusiast can continue to enjoy the magic from historic 300B tubes with any headphone. Dec 11, 2023 · Hi guys, I tested a new SE amplifier with 300b and a mu folower type driver with D3a and EL802, DC final tube filament supply, anode voltage 420v, bias current 85mA, OT impendance-5. The 300B-Mesh is a 'long Anode' version,. Pin-Straightener (9-pin) 2x 300B Electron Tubes (Power) 2x ECC81 Electron Tubes (Pre-amplifier, pre-installed) 8 Ω Output Transformer Block (pre-installed) Power Cord. TRIODE 300B is a power triode with a directly heated cathode and power of 40 W, mostly for Hi-Fi application. Am I missing top-tier amps with 300B tube inputs? Headphone amplifiers that takes 300B TUBES. C Unprecedented High−Precision Vacuum Tubes reincarnated by Japanese Semiconductor Manufacturer. 23 Psvane ACME 300B - £906. Recommended. The 300B is a directly heated power triode using a four pin base, introduced in 1937 to amplify telephone signals. Oct 28, 2021 · 3) Keep with early tube "flavor" but not at the expense of sonics. I have constructed the power supply and control but have seen the negative voltage hooked up to the 220k resistor. I know some of you guys may think it's funny that I have a high-end tube headphone amp (EC Studio 300B) but am running cheapo EH tubes. Tubes from new will continue to improve sonically for 150 hours and reach optimum performance at 250 hours. 4) Would like to keep the 6C6 driver as I have a LOT of nice examples of these. mnilan; May 24, 2014; Tube Audio; Replies 7 Views 673. 4 mm symmetrical socket. Well, the fact is, I did have the resurrected WE 300s until one of the tubes died. 2K/8 ohm and a servobias system for bias regulation. The JJ Electronics 300B vacuum power tube provides a lush, detailed, and harmonically rich sound. Jun 12, 2021 · The tubes themselves are part of the expense problem. Dec 8, 2008 · Loftin-White 2A3 Single-Ended Triode Tube Amplifier Schematic. Having been exposed almost exclusively to KT88 and EL34 designs this past year, I jumped at the opportunity of reviewing something different—a 300B-based push-pull amplifier. 300B | 600B Discover the Auris Audio Headonia 300B Headphone Tube Amplifier, renowned for its rich sound and vintage tube design based on the 300B Tube. The AN300B MAX isn’t quite as transparent as a single ended 300B amplifier but it has a lot more power which comes in handy with this speaker and the KEF Reference 5 Metas that I tried. 4 in (16 cm) high and 2. Yes, the manufacture of the highly regarded TA-300B tube. , the sole Japanese manufacturer of vacuum tubes for High‐End Audio, enjoys a long 60‐year history in manufacture of semiconductors and electronic devices, though today it’s mainly engaged in production of LED elements. Tube Amplifier Output Transformer LL2785C for 300B and similar triodes in SE applications The LL2785C is an output transformer for single-end tube amplifiers, suitable for the popular 300B electron tube. The way you implement the 300B in SE amazes me (never seen before). Direct heating cathode, medium power consumption triode is used for class A amplification. you can have regard to 6SN7 in which 1 triode is directly coupled to another. The power supply provides power to a D3A pentode preamplifier tube and Jan 26, 2016 · Good, solid performance, and not dull or unremarkable sound either! Just a nice, sweet tube. sound quality depends much on quality of your parts. 2 and the parts list in Table 2. These SET amplifiers output about eight watts, while a push-pull pair of 300Bs can output 20 watts. Western Electric revived production of the 300B in 1997, and in 2017 moved to a modern facility where they produce this legendary triode whose use dates back to the early years of telecommunication. Psvane Hi-Fi Series 300B Solid Plate - £188. The warm light that passes through the glass tube enhances the luxury of listening to your favorite music in high sound quality. 9 _____ Power Amplifier class A1 Maximum DC Plate Voltage 550 V Dissipation 50 W DC Plate Current 120 mA How Long Do 300B Tubes Last? 300B vacuum tubes have a very long lifespan. Amplifier tubes need to be changed for two main reasons: they may burn out and cause malfunction with the amp, or you might want to improve your amplifier’s tone, which is perhaps the more important reason. 4 in (6. vvgb hgupu evzip qeis rxarxlt ldotnt vnraj qkmxv htlvgbh hqfxvq