I had this receiver as well as the RX-V2095
. I upgraded to the RX-V2095 through Tweeter's Receiver upgrade option. The RX-V995
did have a humming power transformer that bothered me a bit, but it wasn't truly defective.
I sold my mint condition Yamaha RX-V2095 to my friend 4 years ago for $150. The problem was a dead battery for it's surround settings to keep the EPROM's alive. I had planned to change it but he wasn't concerned. He only uses it for stereo reproduction and has no surround system or the want to have a surround system.
Multichannel PCM is a new format brought to be, from the Bluray format.
Typical audio is 2.0 PCM, DD, dts, or 2 channel analog along with 5.1 DD(6.1 EX) and 5.1 dts (6.1 ES Matrix or Discrete).
Back when the RX-V995 was made there was only 5.1 channel digital formats and only DPL, no DPL II, no DPL IIx, no DPL IIz, and no dts Neo:6 .
I replaced my Yamaha RX-V2095 with a Yamaha RX-V1300 that was 6.1. It was defective and was the 2nd defective Yamaha I had purchased so I went to the 7.1 Denon AVR-3803
for the same money. What a difference, it was musically better IMO at loud volume levels. At lower volume levels, it was hard to tell the difference between the Yamaha and Denon. I kept the Denon in the living room HT system and put the RX-V2095 in the bedroom system.
Enjoy, the RX-V995 was a really nice receiver.
BTW, I also owned a RX-V793
but that model lacked any dts decoding since dts was an up and coming format.
I'm currently using the Denon AVR-3803 and still have not found a suitable replacement that as nice and as compatible with my system, under $2,000.