.......agree with Sonic Frontiers-- either Line 1 or Line 2. I have both-- they are excellent pre-amps and the headphone section of both are great. I use them with Senn. 600s also.
BTW, the Line 1 and 2 sound an awful lot alike with the Line 2 having a bit more smoothness and naturalness, but the differences are not great. The Line 1 can be had for $1000. to $1200., and the Line 2 for $1500. to 1800. Cheers. Craig
BTW, the Line 1 and 2 sound an awful lot alike with the Line 2 having a bit more smoothness and naturalness, but the differences are not great. The Line 1 can be had for $1000. to $1200., and the Line 2 for $1500. to 1800. Cheers. Craig