Anyone looking for a nice 6bq5 amp should really build one of these (SPP). Triode mode,Listening right now through a Broskie CCDA 6sn7 linestage A little hiss through my Lascalas, guess I'll have to work on that power supply.Built two identical amps years ago, this is a revisit.Detailed,dynamic,smooth as silk.Thanks George.Really impressed.