I had a 336 and replaced with Halcros, the Levinson gear are sensitive to up/down stream components. I found that the 336 was a pretty good match with my gear but a tad bright due to the Wilson Watt/puppy 6 I own. Mythtrip has a point that he raises that all high end gear should not color music in any way..To some of us that is the ultimate goal, well, mine at least and if you listen to metal and hard core rock...uncolored music has little impact compared to lets say Bill Evans at the Vangard (Jazz), I found that the Lev did that for me better then any other amp I had owned/tested....for Jazz, Pass Labs X350 was a close second in taste but I found the amp a little too mellow and warm compared to the Lev. The Halcros, a few notches above and, well, unbelievable detail and sound.
Matt
Matt