After I excluded the eVo 6 from my short-list of power amp upgrades for my AV32R's front channels, my favourite candidates were down to Audionet Amp II G2, Bryston 4B SST and TAG 250x3. But then I came across the Vincent (= Sheng Ya ) SP991 monoblocks. (http://www.vincent-tac.de) These Chinese 30kg Class-A beauties are only £2000 for the pair The specs appear very impressive, but before I get through the hassle of getting a pair for testing: Has anybody listened to them? Or heard anything about them? They are supposed to sound very 'warm', so I guess they are quite different from my present, rather analytic favourites, but are they worth considering? There are some specs at the end of: http://www.vincent-tac.de/pdf/S_3SP_91.pdf They obviously have lots of power and harmonic distortions of 0.06% @ 272W and 0.003% @ 85 Watt sound ok, but their damping factor is only 175/40 (100Hz/10kHz). Is that really enough to control speakers in difficult situations? Or do I overestimate the importance of the damping factor?