I was intrigued by the specs myself but wanted to keep out of a for sale thread. But since it's been withdrawn I'll say what I found, I hope you don't mind Ian.
The below thread says that it is the driver stage that is pure class A, and mentions 1W. That doesn't seem to match other specs though, but it would explain the cool running. Perhaps Colin could be kind enough to explain to what extent the amp runs in class A in power terms rather than frequency terms (which I agree I've never seem quoted before).
https://seca.freeforums.net/thread/1...plifier-review
NB everything I read about it says it sounds great, it's just a shame the discussion got distracted by technical specs rather than the SQ.