its okay, nothing special with sennheisers, pretty damned good with grados (although not the rs2 for some reason). the headphone jack is after the tube section.
for their virtues as a stereo preamp the 2L special edition is a decent product for its (widley reduced) price point, the regular 2L is a tad hazier and really needs the component upgrade to reach nonintusiveness. personally i think the old pre1 (not the pre1L) is slightly better than the standard pre2L and you get a very nice phono stage to boot. either way i've found the anthem performs best with great brittan mullards or amprex pq 7308s, sovtek 6h23 if you're on a budget. the front pair of tubes are the most critical for rolling, rolling the back pair kind of locks everything in.