7591 vacuum tube. Always tested, matched, and guaranteed.

7591 vacuum tube Strongly committed to quality manufacturing, Tung-Sol tubes have always been known for their reliability and great tone. 6K for fixed bias or 9K with cathode bias according to the tube data sheets. 17 posts · Joined 2004 Add to quote; Only show this user #1 · Apr 28, 2004. So, tube gurus, why no love for the 7591? 1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591. Red plating is when there’s a problem in the circuit and too much current is t 1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591 Use EL34 tube to replace 7591 tube, Upper tube is EL34 , bottom tube socket on AMP is 7591. The 7591 power tube was manufactured by Washington in 1959. It is a high output audio power tube that is flexible and easy to design with. ifeelqueasy Discussion starter. The amp section is a s 5500 amp. 1. Lowrey 7591 vacuum tube - manufactured by Westinghouse (2. --Class A1 Amp" whenever the grid voltage exceeds -15. $ 199. It is interesting to note that RCA lists the basing diagram for the 7868 as "9RW" Buy JJ 7591S vacuum power tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. Why settle for NOS tubes of unknown quality when you can have these tubes that are burned in for 24 hours and then bias After extensive research and engineering, New Sensor Corp. (225) $ 49. 6550 tubes were first introduced in the 1950s by Tung-Sol. Westinghouse ONE (1) 7591 Beam Power tNOS AT1000 TESTED Vacuum Tube vintage USA TALL BASE 1960-1965. The overall richness and wide frequency response of the 7591 tube makes me wonder why this tube has not found it's way into modern day amplifiers. ONE(1) TUBE TV7D/U Tested 1962 WESTINGHOUSE for Daystrom 7591 Tube. 59. SKU: NOS-7591 . 73 Tung-Sol Factory Platinum Matched PAIR (TWO) 7591A 7591 $ 94. Free shipping. pdf (383632 bytes) New Plate Current Tested Tung-Sol 7581A (KT66) Vacuum Tube. I've also used EL34s, KT66s, 6L6GCs and 807s in my hacker Williamson amplifiers, the only adjustment being a slight change in the feedback resistor to accomodate the EL34s. So, we baby our Fisher output tubes as much as we can. I believe that it is the only new production tube that actually fit in a Scott case. It's loaded with warm tone and is physically very similar to NOS 7591 power tubes so installation is a breeze. Also, used in tube hi-fi equipment made by Fisher, Scott, and Harmon-Kardon. Vacuum Tube - 7591A, Electro-Harmonix | CE Distribution I did some research on a replacement and the closest pentode to a 7355 currently in production is the 7591. or Best Offer. 8V. Audioregenisis sells built ones. Westinghouse (the originator of the type), Sylvania, and GE made 7591s. Vacuum Tube, 7591, JJ Electronics, Power. Mullard 12AX7 / ECC83 New Production Preamp Vacuum Tube. 4%. Sellers with highest buyer ratings; Brand New Tung-Sol Reissue 7591A Plate Current Tested Vacuum Tube 100% Guaranteed & Tested Tubes All tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. 39. 99 USD; Qty Add to Cart. Packaging should be the same as what is found in a retail store ex500 vacuum tube layout. In this episode we have a bit of a laugh and try to destroy some vacuum tubes. And I have a 500-c running with JJ's. 80 shipping. New manufacture Electro Harmonic 7591 are selling as low as $18 on ebay as of last night. One Gold plated 6L6 5881 6P3P to 7591 Vacuum tube convert socket. especially with Duncan Monroe’s guidance on LTspice (LTSpice and vacuum tube models)! After changing the 0. 20. pdf (97687 bytes) 7591 Sylvania P 7591. 99. If 7591 Operating as Sylvania's "Pentode Operation S. Various brands available. 2 to 12. 6, 8. Unless one is wanting the last degree out of 7591s, the Electro Harmonic are just fine. 7 Ways To Prolong Your Tube’s Lifespan May 5, 2021; Review – JJ ECC803-S Tube September 17, 2020; Missing Vacuum Tube Pins, Uncovering The Mystery September 24, 2019; Building a Fender Tweed 5E3 Kit from Trinity Amps July 4, 2018; Vacuum Tube Matching, Bias and Breakup – How They Work Together September 25, 2017 One Gold plated 6L6 5881 6P3P (TO) 7591 Vacuum tube convert socket. 9%. Quantity Price; Quantity -+ Add to Cart . 5. Made in Russia. It uses 7868 tube's. Description; Additional info; Replaces 7591 vacuum power tube types. 40. Your friendly trusted tube store with fast worldwide shipping. Sponsored. 5AR4 / GZ34 Tubes; 5U4 Tubes; 5Y3 Rectifier Tubes; More vacuum tubes can be found in the tube store collection of New Old Stock (NOS). 7591 Tube Gm Performance in a Vacuum Tube Analyzer. Thousands of valves in stock. Upper tube is 7868, bottom tube socket on AMP is 7591. Tung-Sol 12AX7 New Production Preamp Vacuum Tube. Consequently, 7591 and its siblings were used in a vast number of home audio equipment in the 1960s. The JJ is very close to the size of the original 7951. 5% positive feedback; Price: $24. Westinghouse ONE (1) 7591 Beam Power AT1000 Weak Gassy or Leaky Vacuum Tube vintage USA TALL BASE 1960-1965. Add to Cart Quick Vacuum tube amplifiers, often called “valve amps,” are electronic amplifiers that use vacuum tubes to increase the amplitude, or strength, of an audio signal. 77 shipping. 7591 vs 7868 Tubes. $48. This is the 7591: MK buizen handboek Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7591 : 7591. $199. Quad of Tung-Sol 7591A vacuum tubes for sale. pdf (383632 bytes) 7591S : JJ P 7591S. JJ has also produced a few unique vacuum tube variants not produced elsewhere - Their 12AX7, 6L6GC-STR, EL34-B, 5881, 6550, KT120, and 6V6GT vacuum tubes have all become some of our best selling tubes for use in both audio tube amplifiers and vacuum tube guitar amps. Pre-Owned. Steampunk. However, when the tube elite gets together to discuss tubes, it is one that is never spoken of. Westinghouse. Our tubes are always tested, matched and guaranteed. Sovtek 6SC7GT No Reviews yet. Glass octal beam power pentode designed for use as an audio frequency power output tube. The tube has a high power sensitivity and high efficiency and is especially designed for applications where high power output is required. amptata (1,891) 99. In fact, many tubes have a blue glow, especially modern tubes. $31. This tube has been recreated down to the finest detail for exceptional performance and sound quality. Measuring 3 1/8" high from the bottom of the base to the top of the --- A straight-forward test procedure which beats all commercial tube testers at evaluating the true condition of power tubes. $71. JJ 6V6S Power Vacuum Tube. $23. The 7581-A power tube has a plate dissipation rating of 35W, as opposed to the 6L6GC and 7581 rating of 30W. This power tube is commonly used today and employed in modern audio equipment. Thin bases allow better heat dissipation so the the tube will operate cooler and last longer. derosnopS. $26. Not so for new production, e. 95. The JJ power output tubes like 6L6-GC, E34L/EL34, 6V6-S, EL84, 6CA7, KT88, KT77, KT66, 300B, 7027A, and 7591-S are all great performers. USD $‎75. A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Quantity discounts available . Rentschler used to be the Director of Research for the Westinghouse Lamp Division, one could wonder if Dr. The vintage 7591 tube is a remarkably musical sounding tube as I have happily rediscovered in my recently restored McIntosh MA230 integrated amplifier. Use 7868 tube to replace 7591 tube. This piece of gear has sold. $20. 88. Power Pentodes Tubes Sylvania 7868 - Quad set - Pre Owned. This is the first time that this instrument has been Title: 7591 Author: Sylvania Subject: FP-2010-02-12 Created Date: 2/12/2010 10:27:21 PM Vacuum tube 7591A Tung - Sol is a beam tetrode in the glass bulb with octal base, with equipotential cathode, designed to amplify low frequency power in the output stages of HI - FI audio. which were made by Sylvania. 7591. Thankfully, it is rarely a sign of a defect at all. This tube is an upgraded 6L6GC tube but willprovide more headroom than typical 6L6GC tubes. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Unbeatable prices on thousands of guaranteed vacuum tubes for sale, vintage NOS hi-fi audio tubes, radio tubes, ham and industrial ready to ship. call / email: 7591A Syl/GE Coin Base: 7591A NOS 7591 Power Vacuum Tube (0) No Reviews yet. EH or JJ's. Tung-Sol 7591a Audiophile Power Tube. 7591 Original Westinghouse. I did not suggest it because i do not have a schematic, but lo and behold, someone is doing a rebuild on AK and the schematic is posted there. You can not measure the Beam Former current by itself (not unless you open the tube, disconnect the Beam Formers from the cathode, bring the Beam Former connection to an unused header pin, have a glass factory, a special welder, a vacuum pump, and an RF Diathermy heater). View similar gear. Measurements of Gm were performed with a newly designed vacuum tube analyzer, designated as the VTA-101, seen at right. Rectifier tubes will be tested for emissions on a calibrated military grade tube tester. APEX MATCHED JJ Electronic 7591 S 7591A Vacuum Tube Set NEW Never opened nos. This is arguably the finest tube set available in new tubes today for the McIntosh MC225. Intended for home audio amps, the original 7591 was a physically short, high-efficiency beam tetrode that looks as though it was meant to steal some business duced right at the very end of the vacuum tub era. $50 Tung-Sol Factory Platinum Matched PAIR (TWO) 7591A 7591 quantity. Any of the three will work. You will find many of these tubes in our Product Reviews. The 6L6 became the most successful and most produced tube family in vacuum tube history. 31 Reviews. g. $29. 1k) $ 45. Given that Dr. Could be different brand names like Philco, RCA, etc. $245. 7591· The Space Savers produced at Westinghouse's Bath, NY receiving tube facrory. This 19 Watt pentode has been used in a variety of amplifiers including Hi-Fi amps and Ampegs. 7591 Tube Types. pdf (115113 bytes) 7592 You suggested possibly using a 7591 in Ultra Linear mode with 20% to 23% UL tap. HOT ROD RCA 7591 VACUUM Tube NOS 113% For Fisher & Scott Amplifiers Amp. C $15. Electro-Harmonix Power Vacuum Tube, 7591A, Matched Pair. If you want an honest replacement for your RCA or Westinghouse ONE (1) 7591 Beam Power AT1000 TESTED Vacuum Tube vintage USA TALL BASE 1960-1965. TubeDepot supplies vacuum tubes for musical instrument amplifiers, Hi-Fi amplifiers, vintage vacuum tube recording gear and associated equipment. Vacuum tubes, capacitors, sockets specialized shop on production of JJ Electronic manufacturer. Only a few types are still used today, mainly in high-power, high-frequency Substituting for the 7591: Wunderlich Tubes (who made them and how they work) Octal Tubes and Their Predecessors (cross reference) RCA Receiving Tube Manuals (pictures) Antique Tube Equivalents (cross reference) Two Digit Types from 1 to 100 (descriptions) The Amazing Crosley Autoexpressionator: An FM Crystal Set: A Note on Bernie Magers 1PC 7868 to 7591 Vacuum TUBE SOCKET ADAPTER 7868 （top）TO 7591 Use 7868 tube to replace 7591 tube, Upper tube is 7868, bottom tube socket on AMP is 7591. Any other branded 7591 is a rebrand of one of these. In fact, chances are your old Fisher or Scott stereo receiver needs four new 7591A tubes Westinghouse ONE (1) 7591 Beam Power tNOS AT1000 TESTED Vacuum Tube vintage USA TALL BASE 1960-1965. $70. 99 per tube This is a suitable replacement for any 6BQ5 = EL84 = CV2975 = E84L = 7189 tube type. The E88CC tube is equivalent to the 6922 tube. Originally $265, now $238. The vintage The ECC82 tube is equivalent to the 12AU7 tube. Tung-Sol tubes reflect the b | 7591A TUNGSOLPL With only slight adjustments for operating points, the 7591 always struck me as a very sweet, smooth tube, whereas the EL34 produced a brighter, more powerful sound. $0. 81. Radio tubes are valves. Many of the EH preamp tubes are offered with standard or gold pins. Brand New with Platinum Matching! Brand New. These have the full bases as opposed to the thin All NOS tubes types for home audio and guitar amplifiers. 41 shipping. Description New Platinum matched PAIR (set of two) Tung-Sol 7591A tube. Go. Additional Information and Downloads. The 7591 Beam Formers are Internally connected to the Cathode. 50. The MC225 is the arguably the best sounding MAC tube amp and Amplifier 7591 7591A Vacuum Tube Tester V8 Bias Current Checker Octal mA Version. E-H has introduced a true 7591. No products in the cart. Boards that should drive the 7591/7868 are the ST-35 types if you want to keep it simple. Sales:9,156. For The screen and plate voltages are nearly the same, so we can use 7591 triode-connected curves to determine the DC operating point. Amplified Parts (46780) 99. EH makes them. com FREE DELIVERY possible on eligible purchases It was Fender’s tube of choice in the ’60s for such higher-powered amps as the Bassman, Showman, and Twin Reverb. . I have a quad that I want to try out. 18ma on pin 6. Information & Articles. 6 vdc ± This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Price $82. Get the best deals for 7591 Tube Nos at eBay. Body Height: 2. This set contains 4 Tung-Sol 7591A New Production Power Vacuum Tube The only true equivalent to 7591 (a FANTASTIC tube in its' Westinghouse 1960s original version) is the novar-base, equally spectacular, 7868. Testing and/or Matching. Since service involved pulling tubes, it would have been very difficult with vertical tube Amptata V8 Vacuum Tube Tester 7591 7591A Bias Current Checker mA Model Octal New. has reissued the famed Genalex Gold Lion KT77 vacuum tube. Vacuum tube 7591A ЕН is a beam tetrode in the glass bulb with octal base, with equipotential cathode, designed to amplify low frequency power in the output stages of HI - FI audio. Then I compare the sound of the amp with another amp of this same mode JJ 7591 vacuum tube. 7591 - 7868 - 6GM5; New Matched Quad (4) Tung-Sol 7591A Reissue Vacuum Tubes; Tung-Sol 1-Electro Harmonix 7591 7591A Electron Tube Like New in Box -Super Strong Rate 80/75=108% #051. or Best Offer +C $10. seattlewarehouse (991) 100%. Measurement from base to the top of the glass (pins not included in measurement): Slightly under 3" Product MeasurementsItem Height: 3. * 30 Day Rock Solid Warranty on ALL NOS Tubes! We test your order before shipment for world class performance and the best The JJ 7591-S vacuum tube is a high quality option for both guitar and home audio amps. EICO 7591 7591A Fat Base NOS Excellent Testing Values Matched Quad. 50 ($26. Westinghouse (inventor of the 7591 tube) 2. $74. Will work in place of: 7591, 7591A . Vacuum Tubes #1 ONLINE Source for all NOS Vacuum Tubes. Electro Harmonix also offers replacement tubes for the difficult to find 7868, 7591, 6BM8/ECL82, and 6973 power tubes. Guitar Tube Amp Kits; Bud Guitar Tube Amp Kit; Classic British 18W Tube Guitar Amp Kit - 1x12 Combo; Classic British 18W Tube Guitar Amp Kit - Head; Classic British JTM45+ Tube Guitar Amp Kit - Combo; Classic British JTM45+ Tube Guitar Amp Kit - Head; Tweed 5E3 Vacuum Tube Amp Kit; Tweed 5F1 Vacuum Tube Amp Kit; Unassembled Mojo 1965 AB763 The reason the 6GM5 could be recommended is that it's actually a 7591 internal structure placed in a special envelope with a noval 9 pin (like 6BQ5) base. Many still believe that vacuum tube Vacuum Tube Valley Issue 20 has a story "7591 The space savers". Lower the 7591 grid bias resistors to 200-220K with the Electro Harmonic 7591 tubes. NOS Special Hi-Fi Edition Dual Disc Getter 7591 Toshiba Power Tube + OE Box ~ HolyGrail Audio ~ Rich Creamy Vintage Layered Tone. 200; Next. The new Tung-Sol 7581A vacuum tube is the answer. I'm surprised to know that Westinghouse produced coin-base 7591 tubes, or 7591A. pdf (383632 bytes) Blue Glow in Tubes, Tube Getters, and other Tube Info. I have noticed Mullard 12AU7 and 6X4 have way too much bass in some amplifiers. Tubes Unlimited is Your #1 ONLINE Source for NOS Vacuum Tubes All NOS tubes types for home audio and guitar amplifiers. All three made 7591's for RCA, with GE predominently producing the vast majority of coin-based 7591A's for them. Too big to upload here but it mentioned that Sylvania released the 6GM5 in March 1961. 1 bid · Time left 5d 8h left (Tue, 08:08 PM) +$6. SKU: GL-ECC83 (Premium) Availability Strongly committed to quality manufacturing, Tung-Sol tubes have always been known for their reliability and great tone. Login / Register. 3, and 7. 00. Built around the same specs as the original Tung-Sol 7591A, this is the perfect choice for those looking to replace tubes in their Scotts, Harman Kardons, Fischers, or any amp that calls for the 7591A. $55. Also, the phono pre-amp filament voltages are corrected by the mod from 8. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Other JJ Electronics tubes. Free Shipping. $79. We will combine shipping Tested excellent 100% Tube 7591S or Röhre 7591S ID31875, Vacuum Pentode, Octal (Int. 7591 Sylvania Vacuum Tube Matched Pair . 7591 tube was originally introduced in 1959. Blue Glow – We often get asked if blue glow inside of a vacuum tube is a sign of a defect. Vacuum Tube - 7591 JJ Electronics. Before the invention of the transistor in the late 1940s, vacuum tubes were the primary technology for amplification in both audio and radio equipment. JJ 7591s Power Vacuum Tube New old stock! Has never been used. 2 NOS Matched Tung-Sol 5881 Brown Base Vintage Tung Sol 7591A beam-power tube. Queen of the Triods. TubeDepot carries a selection of 7591A / 7868 Compatible Power Vacuum Tubes. Back to audio page 7591 Tubes; 7868 Tubes; 211 | VT4-C Tubes; 807 Tubes; 845 Tubes; Big Powers Tubes | Rectifier Tubes . Westinghouse, Sylvania, and GE were the only US manufacturers of the 7591 series of tubes. Russian device. I have heard the JJ is not the most reliable tube. I remembered wrongly (happens when the memory goes unreliable) to attribute it to GE in my post, sorry. Very good tube, not quite as powerful, just down a few watts comparatively) 4. These are long-lasting and can operate without any damages. Add to Favorites Soviet military vintage 70s Modulator Triode GM-70 ГМ-70. Subscribe to our newsletter and receive a 10% off code for your next order. C $25. -Sol 7591A, including real-world and lab test results”--- This is Addendum #3 to our article, “Brief Comparisons of 7591 Vacuum Tubes,” We tested eight of the Tung-Sol 7591A tubes for power, distortion and Gm Historically, the 7591 pentode vacuum tube was introduced in 1958 and registered with the EIA in 1960 after being developed and produced by Westinghouse’s receiving tube factory in Bath, New York. Jump to Latest 13K views 10 replies 4 participants last post by Chefsky Jun 10, 2004. C $14. You can also learn more about vacuum tubes and tube amplifiers. Gigantic glass vacuum tube. New. These are found in Ampeg and Fisher amplifiers. Smoked one. Rentschler was 7591 Tubes. pdf (880358 bytes) , 7591A. Transistors sw Pt away almost alllltb hiji by 1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591. There have been a few attempts to recreate this tube but it was never really accomplished. 5 vs -16, respectively. 00 shipping. Buyer pays for return shipping. Dropped them all down to 33ma. NEW (NOS) Westinghouse was the originator of this tube. 7591 S is an octal power pentode with power of 19W. 0 reviews / Write a review. Many industrial, military or otherwise professional tubes were also produced. VIVA TUBES. pdf (97687 bytes) 7591A : 7551. 7591A Electro-Harmonix Power Tube Beam power tetrode used in vintage Ampeg and Gibson guitar amplifiers. 7591 and 7868 have the same internals, and electrically they are the same. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Buy 1PC EL34 to 7591 Vacuum TUBE SOCKET ADAPTER EL34 （top）TO 7591: Tubes - Amazon. Always tested, matched, and guaranteed. Toggle menu. I've heard the new JJ's have been prone to failure so I don't like the idea of using them. The screen voltage is higher than the plate voltage because the drop below B+ is about 20% of the DCR, times the sum of the plate and screen currents. Tube manual specs are same too. Since then, they have gained popularity across the globe. Details Add to cart. Hitachi or Toshiba (they don't last as long though) 5. Homepage for SND Tube Sales Home Tube Testers Tube Tester Manuals Tube Sockets Our Buy List Ordering Info Return Policy Our Test Lab Contact Us Links: Tube Lists 00 -- 3V4 4-65 -- 6AZ8 7591: 7868: 6550/KT88: 6V6: 12AU7: 12AT7: 12AX7: 12DW7: 5751: 7247: 6DJ8: 6267/EF86: 6922/7308: 6SN7/5692: 6SL7/5691: Store Hours Monday - Friday 9 am - 5 pm 7591 S POWER PENTODE Base: OCTAL U f =6,3 V I f = 0,8 A Typical characteristic: Class A1 amplifier U a = 300 V U g2 = 300 V U g1 V0=-1 I a = 60 mA I g2 =8 mA S=10 mA/V R i = 29 kΩ µ=16,8 Limiting values: U a = 550 V U g2 =440 V W a =19 W W g2 = 3,3 W I k = 85 mA R g1 = max 0,3 MΩ (fixed bias) max 1 MΩ (cathode bias) U kf = max 200 V Get the best deals for Vacuum Tube 7591 at eBay. Amazon. Amptata Audio Official Store industry for 25 years in chinaWe have chosen to open a store on eBay for six yearsOur company is engaged in the vacuum tube power amplifier and the tube socker adapter/converter's design research and development and salesIf you 40 thoughts on “ A Single Ended Vacuum Tube Amplifier With A Modern Twist ” tg says: January 3, 2023 at 1:30 am Gotta have the fancy expensive tubes just to flex on them My 7591 tube One of my favourite tubes is the 7591. Click the image to enlarge. New Platinum matched quad (set of four) of rare 7591A tube. The Electro Harmonix power vacuum tubes are great quality as well. They offer all the common audio tube types: 12AX7, 12AT7, EL34, 6L6-GC, 6V6-GT, KT88, and 6550. I am trying to make a decision on whether to put new 7591's in my Fisher 500c or try to find a nice quad of NOS tubes. The Vacuum Tube SPICE Models . View similar gear from other sellers on Reverb. I. Photo 1 shows a Mullard 12AX7 / ECC83 New Production Preamp Vacuum Tube. 0 3 product ratings. The Tung-Sol 7581A is rated at a higher 35 watts compared to the standard 7581 or 6L6GC. The 7581A was a tube that stood head and shoulders above a standard 6L6GC. Tube Type: 7591 Manufacturer: Sylvania Manufactured in the USA Tests as NOS Product photos are stock examples of what you will receive. Despite being an older You want a primary of at least 6. The 7868 tube is similar just Just got an old Fisher KX-200 yesterday. ljj247 (1,610) 100%. The power tubes by Genalex/Gold Lion are great as well. com. Special tube for some types of vintage amplifiers. 3125 in. Vacuum Tube - 7591, JJ Electronics. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. 7591 Tubes; 7868 Tubes; 211 | VT4-C Tubes; 807 Tubes; 845 Tubes; Big Powers Tubes | Rectifier Tubes . Vintage and modern production 7591A, 7868 and 6GM5 audio output tubes. JJ Electronic 7591S Power Tube Apex Matched Quad 2010s - Clear Glass / Black Base. Thread starter kevinkr; Start date 2013-10-11 12:35 am; 1; 2; 3 Go to page. Was: $79. Electro Harmonix (not a lot lower than 1 or 2, surprisingly. $120. These Tung-Sols were built to last with a very large plate structure and many heat dissipaters for reliability. This is the new 6V6GT vacuum tube from Electro Harmonix. Vacuum Tube - 7591, JJ Electronics | CE Distribution This 19 Watt pentode has been used in a variety of amplifiers including Hi-Fi amps and Ampegs. Categories: Tubes; Product safety information may be available here. New & NOS power tubes from Electro-Harmonix, JJ & other various brands. 5% positive; Seller's other items Seller's other items; Contact seller; US $24. New Plate Current Tested JJ 7591 Vacuum Tube. What surprised me more was that GE's coin-base 7591 had similar dot patterns on the Tube 7591 or Röhre 7591 ID3729, Beam Power Tube, Octal (Int. The current through the resistor is from two tubes, so the equivalent resistance for one tube is 280Ω. Tubes tested New: 1000, 1025, 1025 & 1100 µmhos on Hickok 752A. Used – Mint. Today's new production Tung-Sol tubes are constructed with the same commitment to quality and reliability. Don't know what the S stands for but the A denotes a longer filament warm up time. Top Rated Seller Top Rated Seller hifi-tubes (223) 100%. 1 Excellent strong westinghouse D getter 7591a / 7591 tube #2. 09. 77 12% off. Item Diameter: This tube was purchased from a Ham radio enthusiast estate. Shopping Cart 0 items. 5AR4 / GZ34 Tubes; 5U4 Tubes; 5Y3 Rectifier Tubes Gold Lion ECC83/B759 (Premium) Preamp Vacuum Tube ; Genalex - Gold Lion ECC83/B759 (Premium) Preamp Vacuum Tube. Philips Rogers JAN 6CB6 Vacuum Tube Quad Set . com: Vacuum Tube Tester Bias Probe 8pin Tube Tester Current Probe Vacuum Tube Amplifier Amptata V8 DIY Octal Vacuum Tube Checker Quad Meter for EL34 KT88 6L6 6CA7 6V6 5881 6550 KT66 KT100 KT120 mA Version : Musical Instruments 7591A, 7581A and 7868 . The internal structure of the couple I have look EXACLY like a Westinghouse 7591 (one is even branded W too), and tester setup is same apart from pinout. The 7581A tube can be used in any 6L6 based tube circuit. Vacuum Tube SPICE Models. Add to cart. also it never saw service in Title: 7591 Author: Tung-Sol Subject: FP-2002-05-02 Created Date: 5/2/2002 9:58:06 PM JJ Electronic - Vacuum tubes, Capacitors, Amplifiers. Please see John Templeton's review of this tube. 7591 - 7868 - 6GM5; Extra Large (Globe) All Extra Large (Globe) 211 - 845 - 805 - 6C33C; Short 9 Pin Mini White Vacuum Tube Box - 12AX7, 12AU7, 6EU7, 6AK5. 95 . All prices are per tube. $28. CBS 6F6 $ 14. Tung Sol 7591A beam-power tube. Shop our great selection of 7591A, 7868, 6GM5 vacuum tubes now. Initially I had them running at 35ma. Consider the Genalex KT88, KT77, KT66, and 300B tubes when looking for premium audio vacuum tubes for use in high end tube audio amplifiers. 95 Sovtek Factory Platinum Matched QUAD (FOUR) 5881/6L6WGC Power The Fluke, vacuum-tube 407D is good to 300mA and worked fine without the 80uF capacitor for the 7591A. Base: OCTAL Uf = 6,3 V If = 7591 7591A. Minimum is 700Same date codes, J. We carry all of the major brands in NOS, vintage and New Production vacuum tubes. Top Rated Seller Top Rated Seller happydiy998 (6,614) 99. pdf (880358 bytes) 7591A Westinghouse P 7591A. Visit us now! Buy Tung-Sol 7591A vacuum power tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. Top Rated Plus. Each. It features one Genalex B759/12AX7 Gold Lion, two Genalex B749/12AU7 Gold Lion, two 12BH7EH GOLD and a quad TUNG-SOL 7591A —ALL are platinum matched and come with factory 90 day warranty. Tung-Sol Factory Platinum Matched PAIR (TWO) KT150 Power Tubes $ 284. or Best Offer +$5. The 7591 tube has never really been on my list of favorite tubes. This bottle has a plate very similar to the 7591 but is enhanced with large cooling fins, a larger 6L6 size bottle and thick As you know, 7591 tubes were popular output tubes for McIntosh MC225, MA230, and other famous amp brands such as Eico and Fisher. Tung-Sol tubes reflect the b | 7591A TUNGSOL The main drawback of a KT88 vacuum tube is that it will not add to the crunch when cranking the gain again. Back to all price lists . Our Preferred Series 7189 vacuum tube is a versatile high quality option for EL84, 6BQ5, and 7189 power tube circuits because of its clean headroom, power, dynamics and harmonic content. 7591 / 7591A Sylvania or GE NEW (NOS) May be other OEM brand names like Eico, Heath, Scott, etc. The Vintage Telefunken tubes though very detailed lack color or tone sometimes and can be very sterile sounding and even noisy in Phase inverters and in certain amplifiers . Top Rated Seller Top Rated Seller happydiy998 (6,584) 98. Returns: 60 days returns. Now it's rare as hell, mainly because it is not made anymore in original form. Easthampton, MA, United States. In this episode I have another Bogen CHB-10, this one with the stock 7868 output tube. Octal, IO) K8A, USA 1935 and Power/Output shown. or Best Offer +C $12. The biggest advantage of 6550 is its stability. pdf (445475 bytes) , 7591. Used – Very Good. 1 of 200 6197 6197T 6240G 6267 6267T 6336 6350 6414 6550A 6550AT 6900 7591 7591T 8045G 8417 8417T 9002 AD1 DA30 E83F E83FT E180CC E182CC EC86 ECC33 ECC35 ECC84 ECC86 This new Tung-Sol 7591 Vacuum Tube might not sound familiar to today’s audiophile, but if you’re a vintage audio buff you’ll know them well. Brand New. Electro-Harmonix 7591A vacuum tube is commonly used in vintage Gibson and New Platinum matched QUAD (FOUR) Tung-Sol 7591A tube. I like the JJ's too but they are really a 7591 tube. Add to Cart. T. Used – Poor. Our goal is to match within 5% with an upper limit of 15% (15% is the industry APEX MATCHED JJ Electronic 7591 S 7591A Vacuum Tube Set NEW Never opened nos. Show More. e. Comes with Ninja Pedals Stickers | Fast Shipping! If you have been waiting for an alternative choice for a 7591A, the wait is over. The original 7591 is one of the rarest power tubes due to its' late introduction in the autumn of mass-produced vacuum tubes and tube gear. Used in some Ampeg amplifiers and hifi applications. Need help? 7591 7591A Beam Power Tube McIntosh 225 Fisher 500C 1964 Scott 299C Scott LK-72 Scott 340B 1964 Univox U305R Sansui 1000a 1970 Eico ST-70 $ 45. The JJ 7591-S vacuum tube is a high quality option for both guitar and home audio amps. Why settle for NOS tubes of unknown quality when you can have these tubes that are burned in for 24 hours and then bias The JJ 7591 is a great replacement for any 7591 tube position. Condition: New New. There is finally a reliable 7591 that rivals the originals. We are very impressed with the quality of these new Tungsols. Amplified Parts (46779) 99. Availability: Usually ships within 24 hours. 01F output coupling capacitor to a more reasonable 10nF in my 12AX7 test 7591: MK buizen handboek Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7591 : 7591. Oh, there is a new version but it's not really Fisher Friendly. 75 in. I've always found every amp that has used it to be more modern sounding (i. The later coin-based versions sometimes had the number at the top. It now uses the same round internal stem as the Tung-Sol 6V6GT. 50 off. Sylvania (slightly brighter but whether that's better depends) 3. FWIW, 7868 (a 7591A with a Novar base) tubes were made by RCA, Sylvania, GE (and possibly Westinghouse: I have never seen a Westinghouse-branded 7868, nor seen one with the trademark Westinghouse type number markings) and Of course the 7591 was a cheap, easily available tube. It sounds infinitely better than my computer speakers, and works great (no exploding caps thank god) I did notice that one of the 7591's was cherry plating however (bright orange anode) so i turned off power and swapped the two tubes, the same socket continued to be the problem. Amplifier 7591 7591A Vacuum Tube Tester V8 Bias Current Checker Octal mA Version. 50 off) $265. If you really want 7591's 7868's might be a better choice sonically so it implied on the forms. or Best Offer +C $11. I've heard the EH's are too tall to fit inside the cabinet so they will not The GE Owensboro 7591 is identifiable by the unmistakable GE sandblasted type number on the glass: The Sylvania-made tube has the number inked on the side of the tube near the top in their distinctive numbering font. This tube is a direct substitute for the KT66, and is in fact a version of the KT66. The ECC81 tube is equivalent to the 12AT7 tube. I didn't see my bike come apart, so it's a little harder trying to put it back together. 1936, followed by the ubiquitous EL34 in 1951, the EL84 in 1953, the 6550 and KT88 in 1954, and last in the series, the 7591 in 1959 and the 7591 Tung-Sol P 7591. 19 shipping. Many of these Tung-Sol vacuum tubes have customer The other amp that i remembered that is a straight power amp but use 7868 power tube which is actually a 7591 tube with a different base, is the Ami Rowe juke box amp. Quad of JJ 7591 vacuum tubes for sale. JJ. 5AR4 / GZ34 Tubes; 5U4 Tubes; 5Y3 Rectifier Tubes; 6CA4 / EZ81 Tubes; Sovtek 6L6WXT+ Power Vacuum Tube (Matched) (6 Reviews) USD $‎45. which were made in the Westinghouse Factory. FREE shipping Add to Related products. However, the 6550 test has average current under 200mA and peaks in the 300mA area, causing the Fluke to limit. Well, all other things being equal, that is harder on the 7591 than a 40% UL tap. I just read another post while searching another topic and found that a 7591 tube bias is around -. Sylvania 7591A Vintage Coin Base Audio Vacuum Tube (matched set, test near NOS) Opens in a new window or tab. from China. 4 V and 6L6 whenever the gate voltage exceeds -12. The JJ 7591 is a great replacement for any 7591 tube While the original Fisher circuit was hard on 7591's, the tube was one hardy SOB and could take operating at close to maximum dissipation. Rectifier tubes will be tested for emissions on a calibrated The JJ Electronic 7591 is a reliable and accurate reproduction of the classic tube. Harvey C. 7355s and 7591s operate in push-pull at pretty similar voltages except the Grid #1 voltage, which are -23. 1 bid · Time left 22h 7m left (Tue, 08:08 PM) +$6. Matching Tool 7591 7591A Amptata V8 Vacuum Tube Tester Bias Current Checker mA. Substitution (of a 6GM5 for a 7591, for example) is a simple matter of either changing sockets or making adaptors by following the basing diagrams. Tune up your tube amplifier. more sparkle to the highs, more impact to the lows, etc) then most EL84's, EL34's, etc. We provide tube sets for virtually any vintage or new production amp on the market. Sovtek 6SN7GT Preamp Vacuum Tube (1 He mentions the test includes the RCA 7591A coin base tube, but fails to mention that RCA never actually manufactured a 7591 tube. pdf (445475 bytes) 7591A RCA (RC30) P 7551. About the Seller. USD $‎40. Tung-Sol 7581A Vacuum Tube “7581A gets an A+. Categories: Power Tube, Tubes, Tung-Sol, Tung-Sol Power Tubes. Product Code: Sylvania 7591 Matched Pair ; Availability: 1; $149. Used – Good. 80. 95 Subscribe & Save. POWER PENTODE 7591 S is an octal power pentode with power of 19W. Vacuum-tube installations like that typically used redundant assemblies, so that one could be serviced while another operated. New Plate Current Tested Tung-Sol 7591A Reissue Vacuum Tube . RCA and GE never made 7591s. $36. I Pair of JJ 7591 vacuum tubes for sale. Opens in a new window or tab. If your amp comes with one of the common octal power-tube types (6L6, EL34, 6V6, 6550, 7027, or Ok i have a sherwood s 7700 that i keep comeing back to in hope of someday getting it working right.