Onkyo M-5000R Power Amplifier First Look | Audioholics
THE SOUND CONTROL - Utilizing an inverted Darlington circuit design, Newly-refined D-PRE mic preamps deliver a fat, rich, smooth tone that gives the MGP Series a significant advantage over any other mixer
Why does a transistor always produce a phase inversion between the base voltage and the collector voltage? - Quora
Easy class A 0dB amplifier for Headphone | diyAudio