Our customers enjoy how natural music sounds when the artificial artifacts, the sonic signatures are eliminated. They realize it is much better to eliminate the problems to begin with. To our knowledge, not one 11A has been placed on the used market since the 11As inception in 2006. Our customers realize what is really important, the music.

Besides perfection, a control (in parallel) can be adjusted to compensate for differing amplifier input impedances. So no one is left out because they are running a 20k vs 100k input impedance amplifier. And of course you can also adjust it just because you want to. You are the boss.

In order to keep the sonic consistency, critical parts are within 0,5% tolerance. The 11A comes in several configurations. There is the B11A with three inputs and two outputs, and the standard 11A with 5 inputs and 2 outputs. One can order either as high gain or low gain.

Take advantage of our 30 day money back guarantee, 7 year warranty. You have nothing to lose except inferior sounding music. Check out our Specials page for demos/slightly blemished 11As.

What else makes the 11A tube preamplifiers keepers?

1. Properly designed low reactance power supply. The power supply has two functions. One is to minimize AC ripple, interference, noise. The second is to provide a constant, reference voltage for all audio frequencies.



2. Tube dampers, and chassis resonance control, helping to provide a dead silent backround. Internal damping eliminates the need for special feet.



3. No global negative feedback, cathode followers, buffer stages, or Mu circuit (which includes cathode follower with super high feedback). The fewer the properly designed stages the better.



4. 7 year parts and labor warranty, 1 year on tubes:

Please feel free to contact me at sasaudio@omnilec.com with any questions or comments.