Hi Ravi,
It indeed looks like a great deal even if you just used it as a preamp-processor, or used the internal amps for the center and surround channels.
Don't you have M80s? If you do, don't count on the Onkyo being able to drive 4-ohm loads in the two front channels without severe current limiting. It's my usual cautionary advice re Onkyo AV receivers driving the 4-ohm M80s.
If you note the specs:
"90 Watts per Channel Minimum into 8 Ohms,20 Hz–20 kHz,0.08%,FTC (2 Channels Driven);105 Watts per Channel Minimum into 8 Ohms,1 kHz,0.7%,FTC (2 Channels Driven);110 Watts per Channel Minimum into 6 Ohms,1 kHz,0.1%,FTC (2 Channels Driven)"
Onkyo measures the amplifiers' lower-impedance output at 6 ohms at only one frequency-- 1 kHz-- and with only two channels driven, which means that it would unlikely drive the 4 ohm M80s with all channels driven and a full-bandwidth music or soundtrack signal.
Of course, if you don't have the M80s, ignore this
.
Regards,