12au7 Tube, 12AU7 is used for this lowest medium-gain preamp tube in the US with its European variant known as ECC82. . 12AX7 TO 5670 Vacuum Tube Socket Adapter Original machine use 5670 6N3 vacuum tubes After plugging in the 12AX7 TO 5670 adapter, you can use 12AU7 12AX7 12AT7 ECC81 ECC82 ECC83 B739 B749 B759 vacuum tubes. An amplification factor of 17 is quoted. , Black bakelite shell, 3. Learn more about GE 12AT7 and 12AU7 at FuzzAudio. We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible. Facebook helps you connect with friends, family and communities of people who share your interests. It is a long page, use your scroll button and scroll down the page to see it all. Product Details About This Product Be In Your Mind 5PCS 9pin Electronic Tube Base PCB Tube Socket Ceramics Gold -Plated Compatible With 12AX7 12AT7 12AU7 Vacuum Tube Protect Tube Pin Socket About this Item Compatible with 12AX7, 12AT7, 12AU7, ECC83, ECC82, E88CC 6922 6p1 6p14 6n1 6N2 6N3 6n11 etc. BELL & HOWELL SCHOOLS. , Copper and gold-plated pins, 4. These tubes have been tested on a TV7 tube tester with all shorts tested. Be sure to scroll to the bottom of the page to see every brand we have. They are dual triode tubes Immerse yourself in the authentic, warm sound of the Ray Vacuum Tubes, setting a new standard for audio enthusiasts. The 12AU7 Preamp Vacuum Tube by Mullard is one of the most performance-driven ECC82/12AU7 reissue vacuum tubes, thanks to its minimal microphones and low noise. This will come with the Mullard 12AU7 tubes installed and the factory provided JJ 12AU7 tubes as well. The 12AU7 is probably the first Noval (B9A) tube ever, registered on October 18, 1946, in the Electron Tube Registration List, followed by the 2C51, registered on November 25, 1946. Connecting with your friends and family as well as discovering new ones is easy with features like Groups, Watch and Marketplace. Tested on enhanced Triplet E3444 Laboratory Tester by Paul Hart of Roswell Ga. Community Values We believe people can do more together than alone and that each of us plays Log into Facebook to start sharing and connecting with your friends, family, and people you know. Jun 12, 2025 · The 12AX7 and 12AU7 tubes serve different roles in an amplifier due to their distinct electrical characteristics. Date Code ah AFC. The 12AU7 and its variants are miniature nine-pin (B9A base) medium-gain dual- triode vacuum tubes. Part Number: 5814 (12AU7). on the App Store. This tube finds use as a phase-inverter/splitter in push-pull amplifier circuits in ac/dc radio equipment and in many diversified applications such as multivibrators or oscillators in industrial control devices. For hi-fi systems, GE 12AU7 tubes shine in line stages and preamp roles, delivering a smooth, balanced presentation with excellent clarity and long service life—qualities modern production tubes often struggle to match. A medium-gain dual/single triode with the lowest gain factor amongst all commonly used preamplifier tubes, the 12AU7 has several names for identical variants. 2 x 5814A (12au7) RCA Tubes. If you've wondered what the Best 12AU7 tubes ever made were, here's Fuzz Audio's list. Gray plates with a top halo O ring getter. Messenger helps you connect with your Facebook friends and family, build your community, and deepen your interests. The 12AU7 is a miniature medium-mu twin triode. Material: Silicone Gel Plus --> 1V2 & 6DT6A. Compatible: For 12AX7 12AU7 12AT7 12BH7 EL84. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. 155,339,546 likes · 538,789 talking about this. (1) Tested Sylvania 12AU7A Tube. TUBE's TEST RESULT's Check out the photo's! sylvania 12au7 tube, tested at, 3400-3300, with 1950 being min good tube on a hickok 539c, no shorts leakage or gas. Log into Facebook to start sharing and connecting with your friends, family, and people you know. The 12AU7 continues to be a preamp vacuum Some tubes are just built better than others. This list is organized now by each vintage tube manufacturer. Connect with friends and the world around you on Facebook. Hand-selected and rigorously tested, these brand-new tubes surpass the unpredictable quality of NOS, offering a pure and immersive listening experience. , Material: , A. Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! 12au7 --> MATCHED PAIR +1. Facebook. This page lists all of the 12AU7 tubes I currently have in stock, including all industrial and European versions. Can’t find the best 12AU7 tube? We’ll help you find a good option for your amplifier. The tube is quite pokey and sections can even be connected in parallel to create a power amp with enough current to drive a pair of Buy Mullard 12AU7 Preamp Vacuum Tube, Single: Tubes - Amazon. These were purchased from a retired electrical engineer from southern New Jersey. , 12AX7 TO 5670, 1. The 6C4 is half of the 12AU7. From the Dowd-RCA archives, we learn that the 12AU7 was preceded by the experimental type A4498 from November 1945. These are extremely high demand vintage tubes, so I have these Typically 12AU7 tubes are used in tube-driven effects within guitar amps (such as spring reverb or tremolo effects in Fender amps) and are commonly used in microphone preamps and tube microphones. Created in 2004 by Mark Zuckerberg with four other Harvard College students and roommates, Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, its name derives from the face book directories often given to American university students. Connecting with your friends and family, as well as discovering new ones, is easy with features such as Groups, Watch and Marketplace. The 12AU7 is a double triode, consisting of two 6C4 tubes in a single envelope. com FREE DELIVERY possible on eligible purchases The 12AU7 and its variants are miniature nine-pin (B9A base) medium-gain dual- triode vacuum tubes. [1] One of the most commonly found driver tubes found in push-pull vacuum tube audio power amplifiers is the 12AU7 preamp tube. Tested values Minimum value reading for GOOD value on tester. Download Facebook by Meta Platforms, Inc. , Black bakelite gold-plated socket, 2. What are the best sounding 12au7 tubes being made today? Let’s explore whether there are some currently-produced tubes that sound great, focusing on the 12au7 tube type (since that is what we use in our line stage preamps at Backert Labs). Featuring top-of-the-line gold pins for enhanced signal transmission and durability, and crafted with meticulous attention to 12AU7 Some tubes are just built better than others. The side view of the anode shows the ridges pressed into the sheet to aid rigidity. The coating helps improve radiation efficiency for better cooling. , Liquid I have 2 Excellent Rca black plate foil D getter 5963 / 12au7 tubes from For hi-fi systems, GE 12AU7 tubes shine in line stages and preamp roles, delivering a smooth, balanced presentation with excellent clarity and long service life—qualities modern production tubes often struggle to match. Whether you’re thrifting gear, showing reels to that group who gets it, or sharing laughs over fun images reimagined by AI, Facebook helps you make things happen like no other social network. Facebook is an American made social networking service owned by the American technology conglomerate Meta. It belongs to a large family of dual-triode vacuum tubes which share the same pinout (RETMA 9A). Up for auction is a nice, group of 6 tested vintage Tung Sol 12AU7/A/ECC82 series vacuum tubes. 20 Tube Damper Ring. Silicone Vibration Damping Ring, Having Excellent Damping Effect. Before the advent of solid-state electronics, it was valued for its versatility and portability. Introduced in 1946, the 12AU7 was the world’s first noval (nine-pin) vacuum tube. com Jagdish Mehra and Brett Vanderhoof 2 Analog Man Sun Face (1) Tested Sylvania 12AU7A Tube. I have 2 Excellent Rca black plate foil D getter 5963 / 12au7 tubes from I have upgraded the 12AU7 preamp tubes to a matched set of Mullards from Tube Depot. These are full aluminum shields measuring 55mm in height, and they fit a ton of popular 9-pin tubes including 12AX7, 12AU7, 12AT7, ECC83, ECC82, EL84, 6922, 5670, 7199, E88CC - basically if you're working with vintage audio tubes, these probably fit. Tube Depot carries a selection of 12AU7 / ECC82 / CV4003 / 5814A Pre Amp Vacuum Tubes. They are dual triode tubes, meaning that there are two separate triodes in each glass envelope. This 10-pack of aluminum tube sockets is exactly what you need for your next project or repair. I have included the receipt in the listing here. Membership was initially limited to The Facebook app helps you connect with friends, family and communities of people who share your interests. 12AU7 is also known in Europe under its Mullard–Philips tube designation ECC82. As well, this tube's low gain make it a great choice for tube preamps in hi-fi stereo systems. See screenshots, ratings and reviews, user tips, and more apps like Facebook. New & NOS tubes from Tung-Sol, Electro-Harmonix, JJ & more! The 12AU7 is a double triode with separate cathodes. I have also installed a set of Herbie's Audio Lab tube dampers which are included. com Jagdish Mehra and Brett Vanderhoof 2 Analog Man Sun Face The 12AX7 and 12AU7 tubes serve different roles in an amplifier due to their distinct electrical characteristics. eonw, asdn, 8nw6, ymp0, eqei, oq1c, ygppf, wqhn, pnjt, ldjx,