I've had mine for about 2 weeks. So far, I'm pleased. I'm still getting used to it, but so far very balanced and musical. Instruments rich, detail good, but not intense. Jim sold me mine without tubes, so I'm running RCA clear tops in the 12au7 and Mullards in the 12ax7 spots. If yours are new Russians, I'd bet you'll get somewhat different results. Every time I roll tubes, I always find things to be a trade off. Still looking for the "perfect" tube.