DIY-Racked DR-2402 API Summing Amplifier

Projects > DIY-Racked DR-2402 API Summing Amplifier

Drawing on the discrete circuitry found in early API consoles, the DIY-Racked DR-2402 is a 24-channel mixer/summing amp with many features and very few design corners cut, in a package that is accessible for entry-level skills (and budgets).


  • 24 channels (8-ch per PCB), with individual direct outs
  • Master insert
  • Pan, level, mute toggle, & indicator LED on each channel
  • Optional master L/R VU meter
  • Utilizes ClassicAPI ACA summing amplifier


  • 350EUR for complete kit (excludes discrete op-amps & VU meters)

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