Regarding above, your saying you are bi-amping, but not getting output from Zone 2 speakers? Is a little hard to understand your actual setup.
If you are bi-amping as you say means you are running all 7.1 channels to power just a 5.1 speaker setup, the Centre surround speakers lines should be running to the second speaker post of your main front speakers. You then set the amp to "bi-amp in speaker setup" and your away.
If you are running zone 2 speakers, you are not actually bi-amping and this should be set to off in the speaker setup. Your centre surround/zone 2 terminal should be connected directly to your zone 2 speakers.
Original reason for post was actually a quick review. Just brought this amp last week, despite the negative reviews, which sound to be resolved with latest USB firmware update. Ran this update straight up after unpacking and after approx 1 hr, it was good to go. Connected up, ran the audessy setup and made some subtle changes. (It did seem to make the crossover frequencies very low at 40Hz for mains and centre, I bumped up slightly to 60hz to let Sub look after these lower freq. Ran some test music and blu rays and can conclude the sound is excellent. huge upgrade from previous Onkyo setup. The lossless True HD and Master Audio codecs really show what this amp can do. Great across the whole range none of the excessive heat or switching clicking like the old amp. Blown away by the sound at the low cost. Now that the HDMI issue has been resolved I think anyone considering this amp should take with a grain of salt, the many negative comments (if they are referring to the HDMI issue).
Plays ARC and 3D throughput perfectly, does take a little time perhaps 30 sec to power up and detect 3D signal. I think my sequencing of powering up Bluray player first and then Amp, before inserting disc works best.
One thing to remember is the tone controls on the receiver itself, be sure to bump up the bass, and treble a little here also, as these fundamental settings are not in your onscreen setup menu, which some pick up and go type people may miss? Definitely recommend reading the manual after a basic trial to get the most from the player, both Audio and Video can be maximised from the Amp.
Overall great amp, very happy for the money I think it represents great value.
Has anybody done much testing with the various onboard video NR, upscaling settings? I believe the Marvell chipset on board may offer best option for DVD upscaling. Anybody tested this vs their Bluray or even TV doing the grunt work? I think Amp should offer the best performance, but not done testing yet. Would be interested in any others feedback in this area.