The Dynaco Stereo 120 Power Amplifier is a classic amplifier with a long history and a legion of devoted fans. Its electronically regulated power supply makes it unique.

The original 40 year old electronically regulated power supplies can be tough to repair if they break. This newly designed kit (shipping for 2 years already) builds beautifully. It's a drop-in replacement for the original regulator.

Compared to the original, it has:

The assembly manual, clearly illustrated and written,  has guided hundreds of builders to first-time success. Visit the updatemydynaco website to download the manual.

You can use the PSUG (Power Supply Up Grade) with original Dynaco amplifier modules, or Updatemydynaco amplifier modules. Buy, build, and install this kit. Bring your Stereo 120 back to life. Make it work and sound better than new.