ruffrecords
Well-known member
You are right, it is not clear from the block diagram but I think the CAPI product is a virtual earth mixer. The block diagram just does not show the 47K feedback resistor around each 2520. In the support thread it says all the amps are arranged as ACAs which is APIs obscure term for virtual earth (Active Combining Amp).
Cheers
Ian
Cheers
Ian