Just wanted to follow up an earlier post. Got my 3600 from HK about a week ago as a replacement for my 354. I emailed them regarding a possible handshake issue, and they immediately just offered a free upgrade to the 3600, $50 in shipping later, and I have it, not bad in my opinion, especially since I was satisfied with my 354, just had a few minor 'issues' I wasn't sure were even problems with the AVR or other components. Either way, no issues, sound is a little better, a tad more power. The bass to the sub seems a little clearer, tighter. The extra setup options, HDMI passthrough, etc. are great.