Brand new Kenetek T4B Opto-Attenuator - Direct replacement for UA, Universal Audio, Urei, Teletronix T4A, T4B or T4C units. These will fit in any LA-2A, LA-3A, BL-40 or clones.  - FREE SHIPPING!!! (US only)

There's a reason top manufacturers like Warm Audio, Stam Audio and Skibbe Electronics have Kenetek T4Bs inside - classic sound!

Kenetek has been manufacturing T4B's for over 20 years. During that time we have discovered how to make the *best* T4B's available - custom photocells manufactured to our specifications (not off-the-shelf parts), custom EL panel manufactured to our specifications, proprietary PC board incorporating a ground plane for lowest noise, and no less than 5 quality assurance tests throughout the build and test process. Each unit is assigned a serial number and test data is kept on every unit. Kenetek T4B's come with a 3 year warranty. If your T4B becomes defective simply return it to us for immediate repair or replacement.

Available in five different release times: Classic (Medium), Way Slow, Good Slow, Good Fast and Stupid Fast. Please specify the release time you want. If none is specified a Classic (Medium) unit will be shipped. Classic Medium is the best overall choice for multi-purpose compression. Bass guitar and other low frequency instruments are better served with either a Good Slow or Way Slow unit. Guitars and fast, punchy vocals do slightly better with a Good Fast or Stupid Fast unit. Drum overheads do best with a Good Fast or Stupid Fast unit. Choose Stupid Fast for more punch, almost like an 1176.

Kenetek T4B's are in use daily by audio professionals all over the world for mastering, mixing and tracking hits in every genre. A new Kenetek T4B will restore that classic sound to your original LA-2A or LA-3A compressor.

Some comments by our customers:

"Just wanted to drop you a quick line to tell you I've popped the T4 into my UA LA2a reissue, and it's transformed it miraculously (obviously, you knew it was going to do that, I didn't)"
    -Lee Russell

"I did some experiments with T4B clones way back and it turned out that joe-electro´s version is closest to the original Urei T4Bs I have at hand. His stereomatching is perfect and he´s a cool guy to deal with. Many thumbs up!!! I can highly recommend his services."
    -jensenmann
     on GroupDIY.com

"KICK. ASS."
    -Eric Boulanger
     Bakery Mastering

"I have now used your T4B's for a month or so and I think they work exactly as they should. Compression is smooth and easily controllable. Perfect. Absolutely."
    -Roni Martin
     on GroupDIY.com

"Big thanks for getting these out. I don't know why anyone would buy elsewhere. Your T4B's put the magic back in my LA3A's while UA and others are getting out of line. Thanks for making a great product that keeps the vintage equipment enjoyable. Make Jim Lawrence proud!""
    -Mappee
     on GroupDIY.com

Note: Your T4B will have a different serial number and will come with its own Warranty Certificate showing the effective date for the 3 year warranty.