well i had a chance last night to test this unit out with not only my headphones but also with my stereo, using my computer as the dac to connect it to my preamp... most of the songs that i played i ripped to my computer, to an external harddrive, in .wav format... when i was using my headphones, the sennheiser hd 650's with equiniox cables they really sounded great, but because both my cd players are in the shop for repair (a krell kav300cd as well as a krell kps28c) i figured that id try using the dac1 hdr with my computer as a source for my stereo... i the benchmark into my stereo using one of the rca outputs on the benchmark into one of the rca imputs on my preamp... and the associated equipment i was using with this was a krell kct pream, krell fpb 700 cx, and two b&w 802 speakers... to be honest using the dac1 hdr with my computer plugged into the preamp sounded nearly as good as my krell kps28c cd player; i do not have them side by side to compare them, but it was prob 95% as good, as i played many songs that i know very well and listen to very often... the only thing that i noticed is that when using the benchmark to drive my stereo with my computer as a source that i seemed to be turring the volume up and down more than i would with my other cd player (although i was using the volume on the preamp itself as in this configuration i was only using the dac in the benchmar)... but it really surprised me in how good of a dac it was and when i went from listening to the speakers to the headphones on the same track i did notice that the headphones were not as clear and open sounding as the speakers were playing the exact same track... this leads me to belive that either the headphones themselves could use improvement or perhaps the amp in the benchmark is not sufficent to drive the 650's... i really do not have a clue which it is, but nonetheless the headphoens did sound amazing, but in light of how the dac made my stereo play, it leads me to wonder if adding a better headphone amp would improve the sound.... my next move will likely be with a high end headphone amp but i am still unsure of what i want to go with, as i have been considering both solid state and tubes.... but my overall impression of the benchmark is that it is a great unit, and i really like the remote when using it as a headphone amp, to me it was worth the extra money for the remote... all that said, however, i am using the benchmark now with my computer and headphones playing some springstein and i just have to smile with how good it sounds
