OK the joke's on ME!
I love that. Great test. Thanks for sharing.
Reminds me of a photo from an audio society meet, of a bunch of audiophiles sitting in chairs, straining to hear the difference between two CD playback setups in a single blind test between an expensive Mark Levinson or some such expensive setup and the other with a cheap JVC DVD player into an Alesis power amp (similar idea to the Behringer power amps). The speakers were the same for both, only the electronics differed. Despite their intense concentration, the audiophiles could not reliably tell which was which. I wish I could find that photo, it's priceless.
Interesting that the only audibly different amp was that little Tripath amp, and only when called upon to drive 4 ohm speakers to loud levels. Of course you can tell the difference, it had to be running at like 5% THD or something.
Anyhow, I guess I'm talking myself into hearing differences between the Hafler P1000 and the A800, or perhaps the Hafler has gotten old enough that it's in need of restoration (probably needs power supply capacitors replaced, as they are roughly 25 years old).
Good stuff.