Wow, I hope somebody reads this because it has been a while since this post. I have the jasmine in my store at the moment and I have used it with K701 and HD600 and both sound quite good. I will say the amp could benefit from having the tubes rolled, but the USB DAC with Foobar sounds great. If you listen to Jazz and classical you will love this amp. Thus far I have noticed the amp to slightly prefer the sound of the senns, but the imaging on my k701 is great. However the bass on those tends to buzz out on dynamic passages. However, those headphones aren't quite broken in yet so it could be they are going through a phase of break in. If you listen to Rock you may want to roll the tubes to something like SED power tubes and upgrade the preamp tubes to cryoset EH gold tubes. All and all though it does make a convincing argument for itself and has great presence and authority with cans.
