The GLF is there to remove any DC bias it simply removes the annoying hum via a 1:1 audio transformer...
I'm no Audio expert, at all lol... but just logically thinking about it, could an optoisolator be up to the same job? Or am I barking up the wrong tree?
I'm no Audio expert, at all lol... but just logically thinking about it, could an optoisolator be up to the same job? Or am I barking up the wrong tree?