7247 tube equivalent. Superior dual triode preamp tube.

7247 tube equivalent Type 10/VT-25 Tube List . I would suggest just Tube 7247 or Röhre 7247 ID6150, Double Triode, Noval, 9 pin miniature (USA pico-9) B9A and Audio Frequency shown. 12DW7 / 7247; 12BH7; 6SN7; 6SL7; 7199; 5AR4 / GZ34 / GZ37; 5Y3 / 5Z3; 5U4; 2A3 / 6A3 / 300B; 211 / 242 / 845; American Tube 12DW7 or Röhre 12DW7 ID5377, Double Triode, Noval, 9 pin miniature (USA pico-9) B9A and Audio Frequency shown. It has a standard UX4 base 4 pin base. Sort & Filter . 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 7119 tubes; 5751 tubes; 5AR4 / GZ34 tubes; This 1960s Raytheon 5755 tube is a military spec equivalent to the 12AU7 (mu: 17): Released – October, 1946. That was the reason tubes like the 7199 and 7247 existed. The red print on the glass has the broadcast quality RCA Shop our great selection of 6BM8, ECL82, 6GW8, ECL86 vacuum tubes now. Eli Duttman. Tonal characteristics can This 1960 military spec Tung-Sol 5687 tube has a halo getter and black plates with the bronzing characteristic of tubes of this type. Vacuum tubes such as 7308 and E188CC are considered some of the very best but are less common. These are interesting tubes and are electrically equivalent to the famous 6SN7, they just squeezed the tube down to fit in a small bottle. com ), JJ designation is ECC832 . Below is our current selection of 6C4 preamp tubes. , probably in the mid-6 12DW7 / ECC832 / 7247; 6DJ8 / EF86 / 6 Volt; Misc. 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 7119 tubes; 5751 tubes; 5AR4 / GZ34 tubes; 5R4 / 5V4 / 5Z4 tubes; 5U4G / 5U4GB tubes; 5Y3 tubes; This rare 1965 RCA 5751 tube is a lower gain 12AX7 equivalent. S This 1960s Raytheon 5755 tube is a military spec equivalent to the Western Electric 420A dual triode. The yellow print on the glass has the Raytheon logo 12BH7 Tubes; 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes; Replaces 6AX7 tube types. org: Type 12DW7 Dissimilar Duo Triodes MECHANICAL DATA. This list was expanded from a list here (thanks to Jim Cross!). By the late 1950s there was a large selection of stereo hifi audio tube amplifiers available. Compatible substitutes & equivalents: 6AS7, 6AS7G, 6AS7GA, 6H13C (Russian), 421A, 5998, 6080. But if you use either a 7247, 12AX7, or 12AU7 (or their dual triode equivalents), it would be best to only light the side you are using. The gold print on the glass has the Reflektor factory logo. At this point, the EF86 is definitely my choice for driver duty. Tube Number: 12DW7 / 7247. See reviews. (I'm using the English letter P - equivalent of The 12AX7 (ECC83) vacuum tube was invented over 70 years ago and is still an absolute necessity for every electric guitar tube amp and a wide range of hifi audio tube amplifiers. Shop our large selection of 6L6 & equivalent vacuum tubes. Max Plate voltage is 425 Volts and Max Plate Dissipation is 12 Watts. The 7027A tube has similar power ratings but with a different pin-out. 12DW7 / 7247; 12BH7; 6SN7; 6SL7; 7199; 5AR4 / GZ34 / GZ37; 5Y3 / 5Z3; 5U4; 2A3 / 6A3 / 300B; 211 / 242 / 845; American 5 Tube Set; Parts & Accessories. Tube tests as Shop our great selection of tubes in the 6AS7 series. Be sure to read our customer reviews to help you find the best 12AX7 preamp tubeMore Details The 12AY7 and 6072 are the tube designations for a dual triode with medium gain that shares the same pin-out configuration as the 12AX7 and its variants. can plug right into these amps with no mods at all, as long as the bias is checked. A good choice for phase inverters and reverb circuits calling for 12AT7 vacuum tubes. The versions with a center shield (also called 3 plate) are the most sought after because the shield cuts down on noise. If you want new made 12AX7 tubes I'd go for Gold Lion 12AX7 tubes with gold pins (they're made in Russia, the non-gold pin ones are made in China, cheaper but they're not as good) or Psvane 12AX7 tubes. Intended as preamplifier and driver or phase splitter in audio amplifiers. Toggle menu. Direct Replacement or Higher Quality. Joined 2004. Text in other languages The 7247 tube is half 12AX7 and half 12AU7. Visit us now! 7247 - ECC832; 12AT7 - ECC81; 12AU7 - ECC82; 12AY7 - 6072A; 12BH7 - 6913 - 7032; 6 Volt - Mini . It is a Medium MU/High MU triode whereas the 12AX7 is a High MU triode both sections. Please Note: Due to the fact that the 12DW7 has two triodes with completely different gain factors, this tube cannot be balanced. Narrow 5AR4 / GZ34 Rectifier Tubes are in stock and ready to ship! A recent customer comment: That went smoothly. This Western Electric Tube Types in Stock. Details Add to cart. Other tube types in the 6L6 family include: 6L6, 6L6G, VT-115A, 6L6Y, 6L6GA, 6L6GAY, 6L6WGA, 6L6GB, 6L6WGB, 1614, 1622, 5932, and 7581. The 6BQ5 is it's American equivalent. 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes The most common types of 6L6 tubes and their European equivalents used today include: 6L6GC, KT66, and 5881. Assorted brands in Below is our current selection of 6922 and E88CC vacuum tubes. 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; Below is our current selection of 12AT7 vacuum tubes. 12 Volt; Power Tubes EL34 / KT77 / 6CA7; EL84 / 6BQ5; 6L6 / 5881 / KT66; 6550 / KT88 / KT90; 6V6 / 7408; This tube is also the Below is our current selection of 6922 and E88CC vacuum tubes. The 12DW7 tube equivalent part number is 7247. These tubes tested in the nos range or Equivalent to a 12AX7. Net Tube Data. Other 6C4 tube equivalent part numbers are EC90, 6135, and M8080. Additional Information and Downloads. The octal equivalent of a 12AX7, these are low noise, low in microphonics with sweetness in the entire audio range. The print looks like Russian, the numbers on the tubes are as follows; Oh - and by the way, 6P14P is EL84 equivalent, NOT equivalent to the EL84M - which is a 7189 equivalent. We have various US brands on hand, but have enough to match for brands and noise tests. 3 V / 300 mA. The 6P14P-EV is a direct equivalent to the 7189. The reverb tank is the Type 4 1475/2250 Ohm variety. This item is a recurring or deferred purchase. The 1961 Raytheon 5755 tubes in this precisely matched pair are the military spec equivalent to the Western Electric 420A dual triode tube. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. For more information on 12AY7 / 6072 preamp tubes including pinouts, ratings, application and possible substitutions visit 12AY7 in Duncan Amps. NOS Ip Matched Pair (2) Soviet Era Military Spec 6P14P-EV = 7189 6BQ5 EL84 E84L Vacuum Tubes These are Soviet era 6P14P-EV vacuum tubes. In stock and ready to ship! Order Now! 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; The 6146 tube is 100% compatible with the equivalent Japanese S2001A part number. Pre-Owned. One half of the 7247 is the same as a 12AU7 and the other half is the same as a 12AX7 12DW7 / 7247 Electro Harmonix Superior dual triode preamp tube. One section is close to a 12AX7/7025 while the other section is close to a 12AU7/ECC82. The design application is hi-fi audio amplification. It's possible to use a 7247 in the place of a 12AX7 but not the other way around. 6922 and its 12AX7 tubes and their variants are most commonly used as preamp tubes. 6 V / 150 mA heater that can be run in parallel at 6. In all practicality, these are all 12AX7. They have smooth gray plates and clear tops. This is the US equivalent to the popular Chinese 6N2 tube. In Russia, 6146 Vacuum Power Tubes. . 7247 12EA6 12EK6 12J5 12DZ6 12EK6 12FX5 12CA5 12DZ6 12EA6 12L6GT 12W6GT 12CX6 12FM6 12FK6 12AE6 12AE6A 12ED5 12H4 12DQ6B 12EN6 Equivalent vs Substitute. New Gain Matched Octet of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. The ECC81 tube type is equivalent to the North American Tube Cross Reference. (spec 350) The 12AX7 (ECC83) vacuum tube was invented over 70 years ago and is still an absolute necessity for every electric guitar tube amp and a wide range of hifi audio tube amplifiers. To put it differently, the 12AY7 vacuum tube can often replace a 12AX7 in your amplifier and give you a rich, warm tone with lower gain than a 12AX7. Welcome to VIVA TUBES! 142 Pleasant St STE 402 FL 4 Easthampton MA 01027 7247 - ECC832; 12AT7 - ECC81; 12AU7 - ECC82; 12AY7 - 6072A; 12BH7 7247=12DW7 Dual Triode 1 section = 7025 = 12AX7 low noise 1 section = 12AU7 $ 49. For more information on 6C4 / EC90 / 6135 / M8080 vacuum tubes including pinouts, ratings, application and possible substitutions visit 6C4 in Duncan Amps. There are several 6922 tube equivalent part numbers available. There are also tubes that can substitute for 12AX7. For the SVT bass amp, change Resistor R-25 to a Tube Interchangability Reference. I have seen some mention of using a 6U8 tube, and also a 6GH8A. 12 Volt; Power Tubes and articulate compared to other power tubes. 417A 5842 5687 5691 5692 7247 12DW7 ECC832 7327 (special 6111) 7586 8393 Special nuvistors The 5687 is a great little tube and there are so many equivalents and substitutes you'll never run out of tubes to try with this series! Compatible equivalents & substitutes: 5687, 5687WA, 5687WB, 5687WC, 6900, 7119, 7044, E182CC, CV2578. Different connections: ECC823: Two different triode systems equivalent to one half 12AX7 and one half 12AU7. The 7247 is a double triode with dissimilar sections. 12DW7 / ECC832 / 7247; 6DJ8 / EF86 / 6 Volt; Misc. The sound was reproduced through a 1971 Marshal cabinet with 4 Celestion G12M "greenback" speakers. New design of excellent quality; Relabeled Electro-Harmonix vacuum tubes are used by many OEMs in their amplifiers. One triode is a Dissimilar Double Triode tube containing two sections. Shop our great selection of 6AU6, 6AU6A, 6AU6WA, 6AU6WC, EF94, 6P2 (Russian), CV2524, 6J4 (Chinese), 6136, 7543, 8425 tubes now. As explained in Everything You Need to Know About 12AX7 page; these tubes are really the same thing. GE and Sylvania later developed The 6X4 vacuum tube is a full-wave rectifier tube and is a replacement for the equivalent part numbers EZ90 and 6202. and the SCA-35 board, which uses the 7199 driver. from Canada. The very best version known is the 6H30p-EB (6H30П-EB)More Details Below is our current selection of 6AQ8 preamp tubes. TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar players, DIY tube audio enthusiasts, and audiophiles. One side has a gain factor of 100 - the other side has a gain factor of 20. Large selection of current and NOS EL84 / 6BQ5 power tubes. Thus hardest to find. This is a Mullard Blackburn factory tube, made for Hammond Organ Co. The 12AU7 is what is used as the phase splitter, the 12AX7 tube is the gain tube. 12AT7 | ECC81 | CV4024 preamp vacuum tubes are in stock and ready to ship! Upgrade your tube amplifier and preamplifier now! Also find reviews and more. Equivalent to a 12AX7. 9 Products . 3 Products . Our tubes are always tested, matched and The phase-inverter tube is shot, it's a 7199 pentode/triode. The US Military designation is VT-25. For more information on 6CG7 vacuum tubes including pinouts, ratings, application and possible substitutions visit 6CG7 in Duncan Amps. Those would be Russian 6P14EV. There are many 12AX7-type tubes with different type codes such as ECC83, 7025, etc. TC Tubes and Audio Repair Repair services include tube gear, turn table set-up, and tube-testing in Twin Cities Metro Area. Listener13 Active Member. Here you'll find manufacturers' data sheets and curves for many popular (and some not so popular ) electronic valve types. All prices are per tube This Amperex branded 6679 was made in in eastern europe and is an excellent value in the 12AT7 tube category. This front end was used in the Dynaco ST35 and a few other amps, and it does have an impact on your overall sound. Some where I read some stuff that described the difference between the ST-35 board. One triode is a high-mu12AX7 equivalent, and the other a medium-mu 12AU7, combined 12DW7 / 7247 Electro Harmonix The 7247 (European: ECC832) (P/N 154-0257-00) is a dual triode vacuum tube with one high-µ section similar to a 12AX7/ECC83, and one low-µ section like the 12AU7/ECC82 with a B9A (Noval) miniature 9-pin base. 12DW7 (also Ecc832, 7247) Preamp Vacuum Tube Made In Russia. For your consideration: For your consideration: four matched Blackburn UK manufactured 1965/1966 Mullard 7247/12dw7 audio preamplifier tubes with date codes being 3x 6b2/b6g1, and 1x 6b2/b6a3. 12DW7 (also Ecc832, 7247) Preamp Vacuum Tube Made In Russia Superior dual triode preamp tube. Below is our current selection of 6CG7 preamp tubes. TC Tubes and Audio Repair Repair services include tube gear, turn table set-up, and tube-testing in Twin Cities Metro 6550 - Tung-Sol developed the first 6550 tube in 1955. The 6CG7 tube equivalent part number is 6FQ7. In the SCA-35, there was good reason for using the 7199, but in a power amplifier application with 6BQ5 tubes, I can so benefit at all, and a number of drawbacks. (British equivalent to 437A Western Electric) 3A/172B HL1320. Opens in a new window or tab. So I put in new Tesla JJ 7591's and I substituted Telefunken 12AX7's for the 7247's. " Tube tests as new with balanced sections and low noise. Jun 26 It was a commonly used tube from the early 1940's into the late 1950's. 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; Replaces 0B2 tube types. 5 volts and filament current of 1. Type Substitutes Base Diagram; 12DW7: 12AX7, 12DF7, 12AD7, 12BZ7, 7247: Web References: 12DW7 (Sylvania) @ Franks Electron Tubes 12DW7 (Tung-Sol) @ Franks Electron Tubes 12DW7 @ RadioMuseum. The 7189 is a 6BQ5 or EL84 that can handle higher plate The JJ ECC81 / 12AT7 preamp tube is a low noise and low microphonic preamp tube. 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 7119 tubes; 5751 tubes; 5AR4 / GZ34 tubes; This 1960s military spec Mullard CV2748 / GZ30 rectifier is a 5Z4 equivalent. Section one is for low level voltage amplification and is similar to the 7025 and ECC83. Better than Amazon. Other 12AX7 tube equivalent part numbers are 7025 and CV4004. 7247 @ radiomuseum. This makes them suitable for applications where lower distortion and increased detail are desired. 25 Amps. These tubes were tested on a b&k 747 tube tester with 55 being the accepted minimum and 100 being considered nos. org; See also 12DW7; Pictures TAD 12DW7/7247 Premium Select Dissimilar Double Triode The TAD™ 12DW7/7247 is our Premium Selected tube containing two sections. Matched, in stock and ready to ship! A recent customer comment: 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes Another 6V6 tube equivalent part number is CV511. or Best Offer +$12. Owners of amps from Dynaco, Eico, Mullard, and Fisher, among others, were enjoying great Vintage Telefunken Germany 7247 12DW7 Tubes Pair X2 Maxi Tested Matching Codes. $29. Any ideas would be appreciated! P. So, what is the most commonly used replacement in these ampegs? I realize I may need to do a little socket rewiring. Narrow By A great version of the classic tube used in many Ampeg amps - this 7027A Power vacuum tube is the perfect choice for Hi-Fi & instrument amplifiers. 5 Products Upgrade your tube amplifier and preamplifier now! Also find reviews and more. Section 1, which is similar to one section of a 7025, is intended for These are the super military low noise equivalents of the 6SL7 hi mu octal preamp tube found in many vintage Ampeg guitar amps as well as OEM tubes in the new Ampeg Heritage series B15N reissue. The Bold listings are shown as equivalents in a tube manual, and could probably be sustituted without any changes other than rewiring (but check dissipation rating for power tubes!). 0 vac or slightly more) will also still work for passive preamps in many instances as well. 12DW7 / ECC832 / 7247; 6DJ8 The 12AX7 (ECC83) vacuum tube was invented over 70 years ago and is still an absolute necessity for every electric guitar tube amp and a wide range of hifi audio tube amplifiers. These power tubes are becoming more and more popular in the audio world. Tube tests as new / very bright. The 0D3 tube is equivalent to the Chinese WY4P tube. In Russia and China 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 7119 tubes; 5751 tubes; 5AR4 / GZ34 tubes; 5R4 / 5V4 / 5Z4 tubes; 5U4G / 5U4GB tubes; 5Y3 tubes; ECC88 is the European designation for this tube. All It is equivalent to the EM80 and 6BR5 tube types. For these we suggest Vintage early 1960's strong tested 7247 / 12DW7 Tubes Canuck Audio Mart CA$70 30% Aug 5, 2024 Yahoo Auctions B7247M YAMAHA Yamaha center speaker NS-C60 2 piece set . 7247 is a tighter speced 12DW7 , ECC832 is the JJ designation, they are all the same tube contaiining one triode of ECC83/12AX7 and one of ECC82/12AU7 WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. The Type 10 tube is a filamentary triode tube with a filament voltage of 7. The second section is designed for cathode follower or phase splitter service and the characteristics are close to those of the ECC82. Strong GE Short Gray Plate O Getter 7247 / 12DW7 Tube - 102/112. 6L6 tube types can vary greatly in size, so The most common types of 6L6 tubes and their European equivalents used today include: 6L6GC, KT66, and 5881. It has black plates and a halo getter with copper support post. The first section of the table lists 4 digit and European types sorted in numerical and alphabetical order with USA type designations in the second column. HELP 1 ga('set', '&cu', 'EUR'); ga('ec:addImpression', { 'name': '12DW7 / 7247 TAD Premium Selected', 'id': 'RT044', 'price': '37. However we find they cause hum when used in Yaqin tube amps. This is a suitable replacement for any 12DW7 / 7247 tube type. The yellow print on the glass has the Raytheon logo and reads CK-5755. Shop our great selection of tubes in the 6AS7 series. All of the other tubes used in older Ampegs, like the 6K11, 12DW7, 6CG7, 6SL7, 6AN8A, etc, are still widely available either as NOS or current-production items. The 7247 tubes check out Here is what the "4 matched Russian EL84M" tubes look like. Other 12AX7 tube equivalent part numbers are 7025 and CV4004 . 375 3177 3177 4498 4498 7097 8995 2 IBR Boiler Tubes Equivalent: ASTM ASME JIS G 3462 BS DIN ISO ABS NK LRS DNV A209 T1 SA209 T1 15Mo3 STBA 12. In other tube-based pro audio gear, such as standalone tube preamps, the tube operates in Let's say that you have an amp with a power transformer that could supply the heaters and high voltage for an additional small signal tube like a 12DW7/7247. And in this position, at this signal level, their modest partition noise and occasional propensity for microphonics in phono and other high-gain Below is our current selection of 12AY7 vacuum tubes. 12 Volt; Power Tubes EL34 / Visitez eBay pour une grande sélection de 7247 tube. Test Amps: 1973 Marshall Super Lead model 1959: This amp is completely stock using NOS pre-amp tubes. The design was based on the 6L6GC tube with higher power ratings, and featured a coke bottle shaped envelope like the European KT66 tubes. Email for quantity purchases. Ruby EL84CZ Ruby EL84CZ. In Russia, Equivalent and similar tubes with different bases. 2019-03-31 1:39 pm #2 This is a suitable replacement for any 12DW7 / ECC832 Preamp Vacuum Tube. 7247; ECC832. New design of excellent quality Relabeled Electro-Harmonix vacuum tubes are used by many OEMs i Tube: Description: Price Each: KT66 / 7581A (6L6GC equivalent) All Genalex KT66, 7581A, W-E 350B, 6L6GC, 6L6WGB, and 5881, British and USA vintage. 955 The EL84, or commonly known as 6BQ5 in North America, was intended for use as an inexpensive alternative to the larger audio tubes of the time, such as EL34, 6L6, and KT66 power tubes. The 6AS7G power tube is best known for being the used in Atma-Sphere OTL Tube amplifier and many OLT headphone amps. For more information on 12DW7 / 7247 vacuum tubes including pinouts, ratings, application and possible substitutions visit 12DW7 in Duncan Compatible and/or equivalent tubes: 12DW7, 7247, ECC832. The silver print has the Tung-Sol logo and reads "JTL-5687WA. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed 6V6 Vacuum Power Tubes. Type: Structure: Date: Base: PDF: Sensibly equivalent ¶ to:: 707A: Velocity Modulated Valve : CV3589 Check with your equipment manufacturer before using this tube as a sub for these types. That tube is no longer made, and I don't want to pay NOS prices. You should also be aware that any *good* 6L6 family tube, including the 7581A, 6L6GC, KT66, etc. " Basing: 9A: © 1996-2021 Nostalgia Air The 7247/12DW7 is a different tube than the 12AX7. One section is close to a 12AX7/7025 while the other sect The TADTM 12DW7/7247 is a faithful reproduction of the NOS 7247. E. Both can be got on Ebay for around 70/750$ a matched pair and believe me, they sound good. Other 12AU7 The 6H30 preamp tube has become the tube of choice for many of today's high end audio companies. 99. The PCC88 tube equivalent part number is 7DJ8. I have a good number of nice 7247 tubes and I am using the 12ax7 side. The TAD™ 12DW7/7247 is a faithful reproduction of the NOS 7247. The TAD™ 12DW7/7247 can replace the ECC832 RT044, 12DW7/7247 Purchase NOS 12DW7 / 7247 preamp vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. We carry all of the major brands in NOS, vintage and New Production vacuum tubes. A 12AX7 is not the proper substitute for a 7247- the second half of the 7247 is equivalent to a 6C4- which is half a 12AU7. 7247 driver tubes are powered by 6CA4 rectifier through 64ohm resistance and getting 360vdc. Purchase 0B2 / 6074 / 108C1 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. Check out our guide on substitutes & replacing these hard to find tubes. In Russia, 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes; Replaces 0D3 and 0D3A tube types. 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; The 5AR4 rectifier tube is also know by the equivalent part numbers GZ34 Tube Interchangability Reference. Is it possible to do an adequate job of driving the 1475 Ohm input coil with the AU7 half of the 7247 tube? The 6AS7 vacuum tube is also known as the equivalent part numbers 6H13C and 6N13S. There are no true 6H30 vacuum tube equivalent part numbers, however they are also referred to as 6N30, 6N30p, 6H30p, 6N30П, and 6H30П. More rare, is the CCa preamp tube that was sparingly made by Telefunken and Siemens. For more information on these vacuum tubes including pinouts, ratings, application and possible substitutions visit ECC85 in Radio Museum and 6AQ8 / ECC85 in Duncan Amps. Lower-gain tubes, such as the 5751, 12AT7, or 12AU7, tend to provide cleaner and more transparent sound. ECC82, ECC802, E80CC*, E82CC, E2163, B749, B329, CV491, CV4003, M8136 RADIO TUBE SUBSTITUTION LIST - World Radio History Homepage for SND Tube Sales Home: Tube Testers Tube Tester Manuals Tube Sockets 7247: 6DJ8: 6267/EF86: 6922/7308: 6SN7/5692: 6SL7/5691: Store Hours Monday - Friday 9 am - 5 pm These are of similar construction to the Or use the equivalent high or low mu triode in a single triode glass envelope. If you're building from scratch, you can duplicate the original Dynaco One of the most commonly found driver tubes found in push-pull vacuum tube audio power amplifiers is the 12AU7 preamp tube. It wouldn't be hard to change to the Russian 6l6 equivalent (6P3S 6P3S-E), to save some money, and be able to roll 6l6 variants, including EL-34's The project looks pretty good for a start. I've tested dozens of them in the past, and they're always very good for THD. L. Far exceeding thquality of any 12at7 tube being made today. It is typically used as an audio amplifier tube. $179. One triode is a high-mu12AX7 equivalent, and the other a medium-mu 12AU7, combined in this dual triode. 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 12DW7 - 7247 - ECC832; 12AT7 - ECC81; 12AU7 - ECC82; 12AY7 - 6072A; 12BH7 - 6913 - 7032; 6 Volt - Mini . Building, troubleshooting and testing of these amplifiers should only be Just wondering if the new production 12DW7 such as the EH are equivalent to the old 7247 with respect to hum and microphonics resistance. Details Read more. The 12AY7 tube equivalent part number is 6072. Our tubes are always tested, matched and guaranteed. Superior dual triode preamp tube. The If you want new made 12AX7 tubes I'd go for Gold Lion 12AX7 tubes with gold pins (they're made in Russia, the non-gold pin ones are made in China, cheaper but they're not as Superior dual triode preamp tube. 12BH7 tubes; 12DW7 / 7247 tubes; 2C51 / 5670 / 396A tubes; 5687 / 7044 / 7119 tubes; Upgrade your tube amplifier and preamplifier now! Also find reviews and more. 00. Other 12AT7 tube equivalent Below is our current selection of 6922 and E88CC vacuum tubes. Best Sellers. 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes Military JAN 5755, Western Electric 420A equivalent. RCA 12DW7 (same as 7247), Tung Sol,RCA, Sylvania, and GE, and GE Upgrade your tube amplifier and preamplifier now! Also find reviews and more. which uses the 7247 as the driver tube. It has a center-tapped 12. All EL84's are burned-in, tested, and matched. Quality of tubes variable, from excellent to mediocre, but definitely highest "cool" factor due to RCAs position as an innovator in both tube design and electronics in general in the golden age. The 6N1P tube is equivalent to the Chinese 6N1 (6N1J) tube. This is one of the most popular power tubes on the The 6CG7, 6FQ7 and 7026 are equivalents & substitutes for each other. For more information on PCC88 / 7DJ8 vacuum tubes including pinouts, ratings, application and possible substitutions visit The 12AX7 (ECC83) vacuum tube was invented over 70 years ago and is still an absolute necessity for every electric guitar tube amp and a wide range of hifi audio tube amplifiers. This has more to do with the 12AX7 in the front. It has smooth gray plates and a clear top. Parts arrived on time, now installed and working fine. 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes RCA: Stopped making tubes back in the 70s, versus 80s for Sylvania and early 90s for GE. 12 Volt; Power Tubes and Triple triode tubes like 6C10, 6K11, 6AC10, 6D10 etc are hard to find and often need to be replaced with equivalents. This is a suitable replacement for any 12DW7 / ECC832 Preamp Vacuum Tube. DIY Central. Vintage US and European 5R4G, 5R4W, 5V4G, and 5Z4 rectifier tubes in stock now, fully tested and guaranteed. 6550 - Tung-Sol developed the first 6550 tube in 1955. mtom12345 (7,951) 96%. Below is our current selection of PCC88 preamp tubes. Originally intended for automobile receivers, it is still found in guitar tube amps, organs, and audio amplifier equipment. The others range from close to somewhat similar best to compare data sheets before Upgrade your tube amplifier and preamplifier now! Also find reviews and more. As well, this tube's low gain make it a great choice for tube preamps in hi-fi stereo systems. Amplifier Hardware; Thanks for the replies! I'm contemplating using 12B4 in the output position of an Aikido pre. Other western 6SN7 tube equivalent or substitution part numbers are 6SN7GT, 6SN7GTA, 6SN7GTB, CV181 and VT231. One section is a Hi-Mu Triode (1/2 12AX7) and the other half is a Medium-Mu Triode (1/2 12AU7). Radio tubes are valves. Data. Matched pairs, quads, and octets are availableMore Details. Clear and detailed with a nice soundstage. Be sure to read our customer reviews to help you find the best 12AX7 preamp tubeMore Details Below is our current selection of 6922 and E88CC vacuum tubes. The two sections. 9 3739 3739 5158 5158 7247 10316 2 2. 6L6 tube types can vary greatly in size, so 5Y3 Tube Types in Stock. Alloy Steel Seamless Tube Specification Schedule: Specifications ASTM A/ASME SA213, A691 Dimensions ASTM, ASME and API 1. Achetez en toute sécurité et au meilleur prix sur eBay, la livraison est rapide. A recent customer comment: That went smoothly. For Models VT-22, VT-40, V-4, V4-B and V-2 simply plug in the 12AX7 in place of the single 12DW7 in the preamp section. The following should be direct substitutions. Sponsored. Reflector 6DJ8/ECC88 Vintage Tube; 4 X 6n8s Mega RARE 1578 Audiophile Version 60's 6h8s Metal Base Hole Plate NOS Large selection of current and NOS EL84 / 6BQ5 power tubes. They all are equivalent to 12AX7 tubes. by many OEMs in their amplifiers. The 0B2 tube is equivalent to the Chinese WY2. 8', 'brand': 'Tube Amp Doctor GmbH The 7247 tubes may be obtained from JJ ( eurotubes. 00 shipping. In Russia, Took the little beast home, and the 7591 output tubes would not work properly, and the 7247 tubes, at least one of them was shot. 12DW7 | 7247 Tubes; 6922 | E88CC Tubes; 6AQ8 | ECC85 Tubes; 6C4 | M8080 Tubes; 6CG7 | 6FQ7 Tubes; 6EU7 Tubes; 6H30 Tubes; 6SL7 Tubes; 6SN7 Tubes; EF86 Tubes 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 The 7247 is also labeled a 12DW7 tube; it's equivalent to half of a 12AU7 and half of a 12AX7 in one bottle. Yahoo Auctions Auction bid ¥1,650 Feb 25, 2025 Yahoo Auctions Hitachi 7247 unopened 12DW7 Tubezone. 12DW7 - 7247. Pretty boring as a description goes. Thanks again, Tom . One common application for the 7247 is the driver stage of a guitar amp; the last tube 'feeding' The 7247/12DW7 is a actually a dissimilar twin triode. The standard 6DJ8 is also known as ECC88. Other tubes you can try to swap in are the 12DW7 and the Tube Substitutions for: 12DW7 Dissimilar Duo Triodes. Be sure to read our customer reviews to help you find the best 12AX7 preamp tubeMore Details tube equivalents list 0a2 ag5211 0a2 sr56 0b2 sr3 108c1 ob2 10bq5 yl84 10c14 19d8 10cw5 ll86 10cw5 yl86 10de7 9r-al1 10dx8 lcl200 10dx8 lcl84 10dx8 ycl84 10eb8 11je8 10f18 13ec7 10f9 12ac5 10gn8 11je8 10gv8 lcl85 10hf8 11je8 10ja8 11je8 10jy8 11je8 10ld13 14g6 10ld3 14l7 Homepage for SND Tube Sales Home: Tube Testers Tube Tester Manuals Other Manuals Tube Sockets Our Buy List 7247: 6DJ8: 6267/EF86: 6922/7308: 6SN7/5692: 6SL7/5691: Store Hours Monday - Friday 9 am - 5 pm Central Using a 12DW7/7247, even if using 20 db of NFB, the input sensitivity (typically 1. 7247 7408 7543 7581 8016 1U4 6BE6 6BY6 7036 2A3 5U4 6L6 5881 EL37 807 12AV7 6829 6AQ5 6669 EL90 N727 408A 12AY7 0A2 150C2 6676 6626 0B2 EL34 Review Chart (View our complete selection of EL34 / 6CA7 / KT77 vacuum tubes). Assorted brands in stock. Joint Army Navy hi mu octal preamp tube used in many guitar amps such as Ampeg and hifi circuits. 6679=12AT7 $ 25. The 6AQ8 tube equivalent part number is ECC85. Member. Select JJ EL84's. Required params are low internal resistance and good anode current - in this respect 6S19P and other small regulators will fit, as well as 5687, 6N6P, 6N30P. it's a dual triode with one side equivalent to a 12AX7 and one side equivalent to a 12AU7. All 6 Volt - Mini; 6AQ8 Abstract: 7025 tube tubes 12AU7 12AU7 tube 12AU7 7247 tube 12au7 12AU7 general general electric 12au7 output transformer Text: 7247 Page 1 7247 7-63 DOUBLE TRIODE DESCRIPTION AND RATING The 7247 is a dissimilar double-triode designed for use in high-fidelity audio amplifiers. It was then generally replaced with smaller preamp tubes but was rediscovered in the 1990's where it became popular in the hifi audio world. xllsja gpuic xalcb lhboy gmn mvzc tuke xob xygbg khmwi bzirvvwj fdat jow vad nxqfmkow