Projects > ClassicAPI 4 Channel Summing Amplifier
The ClassicAPI JLS Inv-ACA PCB contains four active combining amplifiers (ACA) which are bussed into one output. You can use these ACAs to sum many channels into small groups before hitting ClassicAPI’s 2-mix amplifier.
Notable Features:
- Faithful replica of the ACA circuit from vintage API consoles
- Each PCB uses four 2520-style opamps
- Mounts easy on vintage API ACAs
- Can also be used at two 2-into-1 summing amplifiers
Price: $12 for PCB
More Info:
- ClassicAPI’s product page
Category: Summing
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