Just out of curiosity as to your supposed "friend" who had the Odyssey amps in for evaluation in Australia what specific amps were those and more importantly what year exactly was that?Looks like your a bit of an Odyssey fan Jack, you may not like my answer.
https://forum.audiogon.com/search/index?utf8=%E2%9C%93&query=Odyssey&username=jackd
He imported the samples which look like they are still current models, a few years ago, two stereo's and two pairs monoblocks, I believe Khartago and Stratos.
We, 8 of us (6 potential customers), listened over a few hours to the Stereo's and thought well of them both, even into a hard to drive pair of Infinity Epsilon. Then we listened to their bridged monoblock versions.
We thought to a "reasonable level" the stereo's were far better, if you wanted to party the bridged mono's were the way to go.
Then we opened them up to see what the story was, and I pointed out the mono's were just bridged stereo's.
The two stereo's sold that day, the monos he sold off later. needless to say he never became an importer.
Cheers George