i know this has been asked a million times but im stuck. this will be first real desktop headphone amp. i like the ability with the A1 to power computer and high efficient speakers. my only experience with tubes are high gain metal amps lol. i know the tube is for the preamp not for headhone out. my main objective is using them for my Senn HD650's, Westone 40's and Denon AH-7100's. i listen to 95% metal. im looking for fast attack with solid kick-drum. im looking for "FUN" sound. the HD650's... ive never listened to them with proper power. they sound like they wouldnt have much kick-drum attack. they do sound awesome for OPETH!
if i go the tubemagic A1 route, i will also go with the D2 dac. as far the Asgard 2... they look awesome and they have good reviews. mostly pronounced highs. not sure about the bass.
im also considering the NFB-15.32 as an amp/dac