Testing the last Edelweiss-3 Power Amp Plus prototype with Polk Audio Monitor 60 speakers

Source: Tidal with iPhone 6+
A sad mistake was fixed; one ground wire was soldered to the wrong ground place in PCB causing unwanted dirty current through the ground trace. It was audible as hum when sensitive dynamic headphones were inserted into high power output for planar magnetic headphones

Видео Testing the last Edelweiss-3 Power Amp Plus prototype with Polk Audio Monitor 60 speakers канала Wavebourn