About:

Introducing the 535-7B Op-Amp! A recreation of the original Flickinger 535-7 Op-Amp found at the heart of their legendary recording consoles. We have taken the original circuit and reformatted it into API’s popular 2520 format, making it finally possible to get that legendary tone once again! Transform your boring old Pre-amp, EQ, or Compressor into your funkiest!

Features:

• 2520 Format

• Runs @ +/-13VDC to +/-28VDC

• All Discrete

• Potted for durability

• Hand matched and graded transistors

• Hand Built in the USA

*Not compatible with John Hardy M-1 or API 3124