Duvet, i had an S6 for about 3 mths or so. I bought it on the strength of the very good reviews on the `net and got it at an unbeatable price (less than a year old and mint)
class A, SE amp.... sounded brill at high volumes, great midrange and bass power, nice soundstaging too. would drive a tank as well...powerfull for what was essentially a 30 watter.
Compared to the Puresound, it is a better amp, but what do you expect...the Unison S6 is £2k compared to the Puresound at just over £1k.
Build is stunning...30kg of lovliness...looks wont appeal to all and looks better with the cage off. Also, it`s bigger than it looks too...really deep and needs some serious air on the top as the valves run HOT!
Q.Why didn`t i keep it?????
A. At the volumes i listen to, the detail wasn`t there and lost air and space compared to my old Unisis...and far less "chimey" (this is due to the S6 using EL34`s against the 84`s). Cymbals seem muted and high hats dulled too. Bass was excellent though.
I missed my Unisis greatly, so sold the S6 and bought a Unisis signature from Definitive Audio. Better in every way apart from bass at high volumes.