Webcor Dyn-A-Phonic

[Axonite]

I recently found a Webcor GPG-4, Dyn-A-Phonic 4-channel matrix, with connectors on the back for four speakers, and input from the receiver. I couldn't find any information about this particular adapter online, but I'm guessing based on the name and appearance that it's probably a DynaQuad adapter/Hafler circuit?

 

[Mark Anderson]

I have a similar unit. It is just a Hafler circuit. Penncrest 2101.