I'm selling this amp to make space for my new Kevin Gilmore CFA3. I purchased this from the original builder back in the days. The unit is in good condition with normal wear due to the age. There are minor scratches on the surface. The unit otherwise looks very good.

Beta 22 is one of the best amplifiers for dynamic headphones and a fantastic preamplifier for your 2 channel. The sound profile is powerful with some added warmth.

Here is an impression that captures the sound profile well: https://www.head-fi.org/threads/the-woo-wa6se-and-beta22-sigma22-amps-face-off-review-posted.548400/#:~:text=The%20Woo%20is%20warmer%20and,though%20they%27re%20not%20identical.

Please do not hesitate to make an offer or ask anything you may wish to know.

The Amplifier (Beta 22):

2-channel configuration

1 RCA input

1 RCA Preamp Out

128 step R-2R attenuator

LCDuino digital display

Shielded transformer

2x24VDC power supply by sigma22

Separate transformer for the front LCD display

Shielded AC input

Front "standby" button

Amplifier can power both headphone out and preamp out at the same time (although both outputs would be controlled by the same volume attenuator).

Additional Reading Materials

https://www.amb.org/audio/beta22/

Thanks for looking and feel free to reach out with any questions.