Well, it took much longer than expected. My K-01 got here in late February, but because I knew I was going to build a PC Music Server for it and I was out of outlets I finally decided it was time to put in a couple of dedicated lines, which meant buying more Oyaide Outlets and Wall Plates, as well as some good 10g cabling (got it from Jena Labs--I wish I could've afforded the Acrolink but at $30-per-foot and 140+ feet needed... you do the math) and hiring an electrician. So far so good, but it turned out my electrical panel was old, obsolete, and even dangerous, so I was pretty much forced to upgrade that. For the new panel, 2 lines, and whole-house surge protector it cost another $2500--I hope I didn't get screwed on the price, but it sounded reasonable.
Anyway, after some serious spring cleaning (electricians make a mess, don't they?) I finally got to spend all last week on my K-01 (through SinglePower SDS-XLR w/Tung-Sol VT231 drivers and RCA Grey Glass VT231 output: a very musical, rich combination) and I was more impressed by the hour. My first thought was a sigh of relief that it was able to equal my Reimyo CDP-777 in most respects. I still give the edge to the Reimyo in terms of tone and musicality, but I think the K-01 edges it in detail, dynamics, bass impact, and liquidity. I think both are about equal in terms of soundstage and imaging. I know part of me is going to miss the luxurious tone of the Reimyo, but I think the K-01's strengths make up for it, and it's not as if the tone is harsh, digital, or in anyway bad--it just doesn't have the same richness.
Anyway, I spent all my time listening to classical SACDs, including a large selection from Linn (Bach, Mozart, Handel, Purcell), the remastered 60s Karajan Beethoven Symphonies, the Zinman Mahler, and others. It was a lot of fun, and I was mightily impressed at how effortlessly the K-01 handled large-scale pieces even at high volumes. One downside of the R10s and a 6SN7 amp is that the former is hard to drive and the latter can distort at high volume levels, but I was able to crank it up about 3/4 with almost no distortion, even with output tubes as sluggish and quiet as the RCAs. I was also impressed with the level of impact, as both the TS and RCA tubes are really more of the distant, musical, relaxing, soft variety, but there was tons of rhythmic and dynamic attack in Karajan's 7th and 9th (eg). I really think the system was at its best with the Herreweghe Brahms Requiem, where the K-01 really got to show off how it could separate dense textures and make everything audible. For anyone who says that Esoteric misses the soul of the music, is too clinical, etc. I beg them to give this disc a spin: it's such a spiritual experience and the K-01 is as involving as any player I've ever heard. It was also superb on chamber music (Mozart and Purcell on Linn) and solo pieces (Tunnicliffe's Bach Cello Suites in particular with huge and lush).
So after breathing my sigh of relief I really just got back to enjoying the great music. Hearing Karajan on SACD (even if it was 24/96 and not DSD) was like hearing those performances for the first time again, and I'm definitely looking forward to revisiting many other old favorites, as well as trying out some rock and metal with a more lively/dynamic tube combination.