@twoleftears As regards proprietary modules, power output, and price, the two products are directly comparable. The fact that one is housed in two cases is secondary. The Audions are nice but not only considerably more expensive but also less powerful than the Tempo di Gan. My proposed comparison seems to me to offer the levelest of playing fields.
This is impeccable logic, and I agree, thankyou. Ralph is much more forthcoming about certain design features than AGD bloke. This is important to those of us who are curious, bearing in mind the words of @cal3713 ,above, which I concur with.