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7025. The 7025 has a higher gain than a 12AX7 tube. It is also a crisper sounding tube. This is the industrial version of the 12AX7. You can beat the crap out of it and it will still go! Interesting notes: I have heard that ECC803S tubes (12AX7's on Steroids) are great for guitar amps because they have a spiral filament for reduced. Most people believe that the original 12AX7s were upgraded when converted to 7025, but since the mid-50s they've been exactly the same things (they didn't sort thru, test and choose 7025s to be better tubes). The 5751 is more of a 12AT7 equivalent gain wise. Not really necessary in a Twin, it has all the clean overhead you could want already.
Tube Cross-reference Guide.
This addition is long overdue. There are links to tables of equivalent of European and World War II military type numbers. There is also a page describing the reasoning behind the European valve numbering system.European and 4 digit number to USA. This page cross references both ways. European and 4 digit numbers are listed in the table. If you find an error or omission be sure to let me know.
The European System Explained. The European system of valve type numbering is largely incomprehensible to tube hobbyists who reside in North America. However, there is method in their madness. This explanation provided by Mike (Mac) McCarty should make it much clearer.
A cross reference for those WW II VT numbers is in the works. Watch this space.
Tube Selection Guide.
Let me begin by saying what the Tube Selection Guide is not. It is NOT a place to look up the characteristics of a tube you already know the number of. There are plenty of those on the WWW already and it doesn't need another one. One of the best is Franks Electron Tube Data Sheets. This page is to help you find a tube to serve a particular application. For example suppose you need a combination triode diode with a triode μ of 50. Someone experienced in tubes might know exactly where to go in the tube manual to find it. On the other hand a newcomer to tubes might spend an hour or more paging through a tube manual looking for such a tube. (We have spent many hours going through the tube manual to save you the work.) Here all you have to do is go to the triode/diode page and look down the μ column until you find a value, or one as close as you can find, to 50. If you don't find one with exactly 50 it probably doesn't exist.
The data in the tables may seem to be somewhat incomplete. This is deliberate. A complete listing of parameters would make the tables so wide they would be very difficult to read. These are quick scan tables and after you find the tube or tubes that fit your qualifications you should go to a tube manual or Franks Electron Tube Pages to find the details.
Thanks for the help.
Thanks goes to, listed in alphabetical order, Jonathan (Ed) Edwards, Mike (Mac) McCarty, and Tim E. Smith, for their help in paging through the tube manual and typing in data. This project would not have been possible without their help.If You Think a Tube is Missing.
If there is a tube that you think should be in the list but it is not, you can contribute. Don't just drop me an email saying 'I think you should add a 6 _ _ _ to the list'. Except for routine maintenance I've done all the work I'm going to do on this project. Also don't just send me the data sheet and expect me to type in the data. NO. Here's what to do.- Look up the data yourself and type it into your computer.
- Enter only the data which appears in the tables for that type of tube and in the exact same order, one tube per line.
- Separate each piece of data from the others with a comma (,).
- For example 6ZZ4, Triode, H, 6.3, 0.3, 12, 1.5, 250, 1800, 90, 50k, 7 pin mini.
Send these data as part of the body of an email message, as an attached txt file, rtf file, doc file, or even an xls file. If you send it as an xls file leave out the commas. Send them here.
If You Want Your Very Own Copy.
If you want a copy of the tables to look at on your own computer you can download the spreadsheet from here. Tube Selection Guide. One advantage is that you can sort the data by any column. Looking for a pentode with a low Rp? Sort the Rp column in ascending order and the lowest ones will be at the top of the list. Have fun.How to read the tables.
The column headings should be self explanatory to someone acquainted with tube terminology. An entry of N. A. or N/A means the information is Not Available. If an entry is not applicable the entry will be a dash (-) or completely blank. If the tube number is in red it means that type is currently being manufactured somewhere in the world.here are the links.
Rectifier Tubes. On this page the term FW stands for full-wave and HW for Half-wave. The rectifier section of the 117 volt heater tubes are listed here. The power amplifier sections are listed in the power tube table. Gaseous Voltage Regulator Tubes. These were the Zener diodes of the tube age.
Small Signal Diodes. This page covers tubes such as the 6AL5 that are not intended for use as power rectifiers but as low level diodes for example, an AM detector.
Single Triodes. A single triode is not a triode that is looking for a mate, it is a tube with one triode in the envelope. That is to distinguish it from double triodes, triodes with diodes, and triodes with pentodes in the same tube.
Triodes with Diodes. There are a lot of triodes with diodes. Apparently some are made to be used as an FM detector. None are for power rectification. A typical set of ratings is PIV of 100 volts and current of 1 to 5 mA.
Duo Identical Triodes. There are a lot more than the 12A_7 series.
Duo Dissimilar Triodes. I used to think there was only one duo dissimilar triode until I compiled this list.
Tetrodes. Tetrodes are supposed to be obsolete but you wouldn't know it by looking at this list.
Sharp Cutoff Pentodes. Sharp cutoff pentodes are used in everything from audio preamps to FM and TV receivers.
Remote and Semi-remote Cutoff Pentodes These tubes are used when AGC/AVC is required. There are so few semi-remote cutoff tubes it wouldn't be worthwhile to make a separate page for them.
Pentodes with diodes. I was surprised how many of these there are. As with the triode/diodes the diodes are low power. The 117 volt heater tubes that are a rectifier and a beam power amplifier in the same envelope are not listed here. The rectifier sections are listed in the rectifiers chart and the power sections are listed in the power tubes chart.
Pentodes with Triodes. There are many of these and they are all different.
Converter, Modulator, and Control Tubes. This is admittedly a catch all page for things that wouldn't fit anywhere else. The page contains listings of tubes that are variously known as heptodes or pentagrid converters. There aren't very many of these so the chart contains sync separator, gated beam detector, and beam deflection tubes.
Power Tubes. You'll find everything from a 3V4 to an 833A. The 117 volt heater beam power amplifiers that also have a rectifier in the same envelope are listed here. Their rectifier sections are listed in the rectifier table.
12 Volt Car Radio Tubes. An unique subset of tubes are those that were designed to operate with a plate supply voltage of 12 volts. These were used in car radios before transistors were developed that would perform well enough in radio circuits to be used in the difficult environment of an automobile. In such radios a transistor was used to produce the audio power necessary to be heard over the noise of a car. These tubes are scattered throughout the other tables but I thought it would be a good idea to list them all in one place.
Home.
6N2P-EV NEW TUBE NOS 12AX7 ECC83 7025 5751 100% GARANTY WORKING
100% garanty working. Up for sale 1pcs 6N2P-EV Russian tube voshod factory. Tubes new, never been in using.From Ukraine$5.00 shippingBrand: UnbrandedType: NOS Tube$23.00 shipping(1) Strong Testnging Pair Of Grey Plate RCA 12AX7/7025 Audio Vacuum Tubes
Both tubes were tested on my TV-7 tester where 32 is the required minimum and both tubes had no leaks or shorts. Both tubes would make a super nice addition to anyone's collection or to use either one.0 bids$25.35 shippingEnding Friday at 7:07PM PDT4d 18hBrand: RCAType: Vacuum TubeCustoms services and international tracking provided(1) NOS/NIB Strong Testing Pair Of GE 12AX7/7025 Audio Vacuum Tubes
Both tubes were tested on my TV-7 tester where 32 is the required minimum and both tubes had no leaks or shorts and both tubes have grey plates. Both tubes would make a super nice addition to anyone's collection or to use either one.2 bids$25.37 shippingEnding Friday at 6:42PM PDT4d 17hBrand: GEType: Vacuum TubeCustoms services and international tracking provided(1) Strong Testing Pair Of Phillips/Sylvania 12AX7/7025 Audio Vacuum Tubes
Both tubes were tested on my TV-7 tester where 32 is the required minimum and both tubes had no leaks or shorts and both tubes have grey plates. Both tubes would make a super nice addition to anyone's collection or to use either one.3 bids$25.45 shippingEnding Friday at 6:35PM PDT4d 17hBrand: SYLVANIAType: Vacuum TubeCustoms services and international tracking providedStrong & Balanced 1963 GE General Electric 7025 12AX7 ECC83 tube
Tube#1: Triode#1: 48. Triode#2: 48. Date code: 63-35 - 1963.Brand: GE$14.00 shippingType: Preamp TubesElectro-Harmonix 12AX7 Preamp Tube (also ECC83, 7025) NEW
Classic high quality preamp tube from EHX. From the EHX wesbite.Brand: Electro-Harmonix$15.54 shippingType: Preamp TubesCustoms services and international tracking providedOne Pair of Pure 7025 Tubes, RCA, Ratings 100/104
One pair of used early version of pure 7025 (not 7025/12AX7) tubes, by RCA. Slant square getter. RCA's tubes are among the best sounding tubes for audiophile.From Canada$12.00 shippingBrand: RCANew Listing1 x 7025 (12ax7) Westinghouse Tube *Short Grey Ribbed Plates-D*Strong & Balanced
1 x 7025 (12ax7) Westinghouse Tube. Tested on enhanced Triplet E3444 laboratory Tester prepared by Paul Hart of Roswell Ga. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.Brand: Westinghouse$18.00 shippingType: Vacuum TubeVintage 1958 Amperex Bugle boy 12AX7 ECC83 7025 D Getter mC6 TUBE
Date Code: mC6 delta8I - 1958. Tube#1: Triode#1: 48. Triode#2: 46.Brand: Amperex$18.33 shippingCustoms services and international tracking providedStrong 1970s GE 7025 12AX7A ECC83 Tube
Strong 1970s GE 7025 12AX7A ECC83 Tube (item#120). Tube#1: Triode#1: 52. Triode#2: 50.Brand: GE$17.11 shippingType: Preamp TubesCustoms services and international tracking providedNIB new matched pair of 12AX7/ 12AX7A / 12AX7B / 7025 vacuum tube valves
(they are marked 12AX7B, premium low noise tubes). They test within 10% on our Jackson 648A tube tester.Top Rated Plus$13.99 shippingBrand: UnbrandedType: Vacuum Tube1 NOS NIB Sylvania Philips 7025 12AX7A Low Noise Tube USA
These are getting scarce and are a high end tube used by most of the professionals. Great for any high end a udio amplifier. This tube is what audiophile enthusiasts are looking for. This tube can be used as a driver tube in your amplifier.Brand: Philips$13.00 shippingType: NOS TubeSYLVANIA TYPE 12AX7A/7025A DUAL TRIODE PREAMP VACUUM TUBE USED TESTED 950 uMho
From Canada$11.63 shippingBrand: SYLVANIAType: Preamp TubesZenith 7025 ( ecc83 12AX7A) TUBE (free shipping) /////
An US-made Zenith 7025 ( ecc83 12AX7A) TUBE as pictured. It'sin good condition (tested on my tube tester. Where nos tube normal ranged 105-110, min-good=65, max-good=120. Tested tube = 107/106 respectively. ).Brand: Zenith$15.75 shippingCustoms services and international tracking providedPair GE 7025 12AX7A/ECC83 Copper Post Audio Tubes - Same Date Code 1
Match Date Code - KE-188-5 & KE 188-5. TV-7D/U Reading - 41/40 & 41/42; Min -32/32.Brand: GE$15.00 shippingType: Vacuum TubeNOS RCA 12AX7A 7025 ECC83 12AX7 PAIR TUBES 'CREAM OF THE CROP' HIGHEST ECHELON!
The 12AX7A was an 'improved' 12AX7. NOS RCA 12AX7A ECC83 12AX7 USA TUBE for Fender Tweed Champ VOX MARSHALL Dr.Z. RCA 12AX7A ECC83 12AX7 USA TUBE for Fender Tweed Champ. RCA 12AX7A ECC83 12AX7 USA TUBE for Fender Tweed Champ (#290497360769).Brand: RCAWas: Previous Price$349.95Type: NOS TubeTop Rated Plus$14.25 shippingBrand: MatsushitaType: NOS TubeNew Listing1 x 7025 (12ax7) GE Tube *Long Grey Ribbed Plates-D Getter*
1 x 7025 (12ax7) GE Tube. Tested on enhanced Triplet E3444 laboratory Tester prepared by Paul Hart of Roswell Ga. Horse shoe D Getter. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.Brand: GE$18.00 shippingType: Vacuum TubeBRIMAR ENGLAND MADE NOS PAIR 12AX7 SQUARE GETTER TALL PLATE TUBE'S ECC83 7025
YOU WILL BE GETTING WHAT IS IN THE PHOTO'S BELOW. EVERYTHING YOU SEE IS EXACTLY WHAT YOU WILL GET FOR THIS SALE. TWO EXCELLENT NOS 12AX7 BRIMAR TUBES MADE IN ENGLAND. WE SPECIALIZE IN TRIODE'S AND PENTODE'S ON THE RARE SIDE.Brand: BrimarWas: Previous Price$325.00Type: NOS Tubeor Best OfferTube Amp Doctor TAD 7025WA 12AX7 preamp vacuum tube
Tube Amp Doctor 7025WA pre-amp tube. These are carefully selected at the factory to ensure the best quality.Type: Vacuum Tube$9.95 shippingNew Listing1 x 7025 (12ax7) GE Tube *Long Grey Ribbed Plates-O*Balanced*
1 x 7025 (12ax7) GE Tube. Tested on enhanced Triplet E3444 laboratory Tester prepared by Paul Hart of Roswell Ga. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.Brand: GE$18.00 shippingType: Vacuum TubeOne Lot of Three Early Long Plate 7025 Tubes, By G.E.
One lot of three early 7025 tubes, by G.E. Long grey plate, and horse-shoe getter.From Canada$12.00 shippingBrand: GENew Listing1 x 7025 (12ax7) GE Tube *Long Grey Ribbed Plates-O*Strong & Balanced*
1 x 7025 (12ax7) GE Tube. Tested on enhanced Triplet E3444 laboratory Tester prepared by Paul Hart of Roswell Ga. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.Brand: GE$18.00 shippingType: Vacuum TubeStrong Vintage 1965 RCA 12AX7A 7025 ECC83 TUBE - Excellent !!!
Tube#1: Triode#1: 50. Triode#2: 48. Date code:AR- 1965.Brand: RCA$16.92 shippingCustoms services and international tracking providedVintage GE 12AX7 7025 Triple Mica Grey Plate Halo Getter Tube Tests Good
Up for sale here is this used GE Made in USA 12AX7 / 7025 vacuum tube. It is from the 1960s or 1970s and has gray ribbed plates, triple mica construction, and a halo getter.Brand: GE$14.00 shippingShuguang Audio Vacuum Tube 7025 Valve Amp 1PC New
Audio Vacuum Shuguang Tube 7025 Valve AMP 1PC New. Chinese 7025. heater heating. Beam power tube B6550's (. 6550A ) anticathode limite dissipation power is 35W ( 42W ). In audio frequency amplifier, two tubes of A1 and AB1 driving output can get the power of 100W.Top Rated PlusWas: Previous Price$11.50From ChinaBrand: UnbrandedShowing slide {CURRENT_SLIDE} of {TOTAL_SLIDES} - Hot this week in 7025 TubeShowing slide {CURRENT_SLIDE} of {TOTAL_SLIDES} - Make an Offer
- 6N2P-EV NEW TUBE NOS 12AX7 ECC83 7025 5751 100% GARANTY WORKING+$5.00 shippingMake Offer - 6N2P-EV NEW TUBE NOS 12AX7 ECC83 7025 5751 100% GARANTY WORKING
- (1) Strong Testnging Pair Of Grey Plate RCA 12AX7/7025 Audio Vacuum Tubes+$25.35 shippingMake Offer - (1) Strong Testnging Pair Of Grey Plate RCA 12AX7/7025 Audio Vacuum Tubes
- Zenith 7025 ( ecc83 12AX7A) TUBE (free shipping) /////+$15.75 shippingMake Offer - Zenith 7025 ( ecc83 12AX7A) TUBE (free shipping) /////
- 1 Webcor 7025 Electronic Vacuum Tube. Great Britain+$24.00 shippingMake Offer - 1 Webcor 7025 Electronic Vacuum Tube. Great Britain
- $33.99Make Offer - CBS 7025 Vacuum Tube Strong & Balanced
- Amperex PQ USA 12AX7A/7025 Gray Plate O Get Vacuum Tube 101/102%+$22.43 shippingMake Offer - Amperex PQ USA 12AX7A/7025 Gray Plate O Get Vacuum Tube 101/102%
- PAIR RARE NOS NIB Mullard 10m 12ax7 ECC83 tubes 12ax7a b339 7025 b759 6681+$41.68 shippingMake Offer - PAIR RARE NOS NIB Mullard 10m 12ax7 ECC83 tubes 12ax7a b339 7025 b759 6681
- Strong GE Short Gray Plate O Getter 12AX7A / 7025 Tube - 110/114+$19.99 shippingMake Offer - Strong GE Short Gray Plate O Getter 12AX7A / 7025 Tube - 110/114
- BRIMAR ENGLAND MADE NOS PAIR 12AX7 SQUARE GETTER TALL PLATE TUBE'S ECC83 7025+$24.95 shippingMake Offer - BRIMAR ENGLAND MADE NOS PAIR 12AX7 SQUARE GETTER TALL PLATE TUBE'S ECC83 7025
- $63.99Make Offer - Rogers Mullard 7025 A Vacuum Tube Bogey +
- RARE Telefunken 7025 Vacuum Tube One section Low <>+$14.00 shippingMake Offer - RARE Telefunken 7025 Vacuum Tube One section Low <>
- Matched Pair 50s Marconi 7025A 12AX7A NOS Black Plate Low Noise Tubes RCA Canada+$11.00 shippingMake Offer - Matched Pair 50s Marconi 7025A 12AX7A NOS Black Plate Low Noise Tubes RCA Canada
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- Home
- About
- Contact
- Pdf Bhagavad Gita In Marathi
- Silver Efex Pro 2
- Driverpack Solution 16 Online
- Vivekananda Tamil Quotes
- Zapatillas Casual Unisex Old Skool Lite 2-tone Vans
- Mamp 5 Serial Key
- I Help People
- G Data Internet Security Apk Cracked
- Advanced Systemcare Ultimate 12.12 Free Keys
- Download Promodel Full Crack
- Caesar 3 Full Game Download
- 7025 Tube Equivalent
- Describe Accrual Accounting
- Download Firmware Redmi 2 Pro Rom Global 2014819
- Nurse Uniform Mock Up
- Does The Drip Edge Attached Behind Or Over The Gutter?
- Honda Motorcycle Vin Decoder
- Fender Mexican Acoustasonis Vs Ovation Vxt
- Udmx Driver Windows 10
- Descargar Caravaneer 2
- Galaxy S10 Arrived
- Controls Engineer Growth
- Jatt Yamla Translation
- Netgear Default Password
- Days Gone Cd-key Serial Generator Pc Download
- Roho Snyper Eric Dustin Warren Racing
- Widcomm bluetooth software windows 10
- American pie 1 download free
- Microsoft word is not working
- 2008 corvette front license plate bracket
- Save wizard for ps4 monster hunter world charge hr
- Batman arkham asylum ps3 generator room
- How to close homebrew launcher 3ds
- Download hatch patterns for autocad 2016
- Devta novel downlod
- Mts to avi converter online
- Bs player pro apk download
- Tony hawk pro skater 5 for pc
- Good youtube video editing software for windows free
- Hp photosmart c6280 driver only
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- Samsung 4k player app
- Install slack watch app
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