Gar2520 Discrete Opamp

Projects > Gar2520 Discrete Opamp

The Gar2520 is an imitation of the mid 70’s API 2520 opamps designed by Gary Barnett and based on the Peter Lazaro’s reverse-engineering work. ¬†According to CAPI, the Gar2520 sounds “hairsplittingly” close to the original, while using all modern and widely available components.

Images courtesy of CAPI

Notable Features:

  • Industry standard 2520 footprint
  • Can be powered by +/-12 to +/-20 rails
  • All transistors are currently available


Products and more information available at

A blog post about building the Gar2520 from Brian Gilbert.