I was going to check out the Odyssey Stratos amps. However, even though they offer a 30 day return policy. They explicitly state the the unit won't be "broken in" for 6 weeks of being powered on. So you effectively don't know what you're buying until after the 30 days is up. Straight from the horse's mouth:

"Within the break-in process, we distinguish four distinct phases of performance:

First Period: After turning on your amplifier or preamplifier for the first time, the units will require a few minutes to stabilize. The sound will be rather harsh on the higher frequencies, and the dynamic range is rather restricted with a flat overall presentation. This sonic signature will always be apparent when you turn on "cold" components.

Second Period: This stage will be reached after approximately 1-2 hours of playing time and lasts about 3-4 days. This stage is all about the charging of the power supply, and during this time, the dynamics, soundstaging, focus, and transients will improve noticeably. Essentially, your unit will start "opening up and relaxing." However, please also note that the amplifiers do a "Jeckyl and Hyde" during this time to some degree. Meaning that one day you might not have any bass whatsoever while the next day you might have too much of it, for example. Overall, the presentation might be very unstabile.

Third Period: After approximately 10-14 days of playing and being charged, the upper midrange and highs will "smoothen out". The bass will improve in speed and articulation with less overhang. The result is more even and natural tone balance.

Fourth Period: After about 6 weeks + of operation when left on continuously, your unit should be very close to being fully broken in. The sound and performance has progressively improved and your unit will perform to it's full sonic potential."

I've been listening to my 755 quite a bit since I received it and I'm not sure if I'm happy with it yet. It's definitely not sounding that great with the Dahlquist DQ-20i speakers I used to have for mains. I just took delivery of some Magnepan 1.6's so we'll see if things improve over a few days. I was VERY happy with my Adcom GFA-5802, but I didn't feel like dropping another $5k on 2 more for my center and surround channels.

Cheers,