Thanks to all your words of wisdom I've decided against changing the Rotel improvised preamp and going for a new dac. I've looked at the Beresford Caimen and the Cambridge DACMADIC 100 and the MAGIC 100 Plus. The later uses upsampling, which I'm suspicious of, and the other Cambridge only plays up to 96kHz files, so I'm leaning towards the Beresford. Anyone got experience of any of these dacs?
John
Linn Axis tt/Akito arm/Nagaoka MP200 or ATVM95/ML carts/Trichord Dino mk3 phono stage/dedicated PSU
Marantz CD6006/Cambridge 650T DAB
Tisbury Mini Passive II pre/Roksan K3 Dac/Roksan K2 integrated used as power amp
Atlas Element Integra Superior inter-connects
Spendor SP1s(1988)/Van-Damme UP-LCOFC HiFi 4mm cable