popej
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There exist other Denon stereo amp, based on AVR technology, DRA-800H:
DRA-800H power amplifier looks a bit better with 78dB SINAD. For both amplifiers, service manuals are available in net. What is interesting is that PMA-600NE has quite complicated amplifier. FET input, cascodes, second differential pair, current mirror, MOSFET power transistors, all together 15 transistors. DRA-800H has as simple power amplifier as one can get for this power level. It is 6 transistors (2 are Darlingtons), no current sources at all. It measures better and costs less.
Denon DRA-800H Review (Stereo Receiver)
This is a review and detailed measurements of the Denon DRA-800H Stereo AV Receiver. It was kindly purchased used by a member and drop shipped to me. It costs new US $599 from Amazon including Prime shipping. The front looks like any multi-channel receiver: Then you look in the back and...
www.audiosciencereview.com
DRA-800H power amplifier looks a bit better with 78dB SINAD. For both amplifiers, service manuals are available in net. What is interesting is that PMA-600NE has quite complicated amplifier. FET input, cascodes, second differential pair, current mirror, MOSFET power transistors, all together 15 transistors. DRA-800H has as simple power amplifier as one can get for this power level. It is 6 transistors (2 are Darlingtons), no current sources at all. It measures better and costs less.