I was looking to build a system I could live with for the long haul, and I think I've accomplished that. Over the last year I've gradually replaced every component in my rig (including cables). Each upgrade brought a noticeable improvement, but stopped short of "wow". Until the Galion TS-120 SE. The "wow" I was looking for was there from the start, and just got better as the tubes broke in. I couldn't believe how good the Galion made my 70's era box speakers sound (neither could my adult kids). Never-the-less, the old speakers were now the limiting factor, and to get the full benefit of the Galion I needed another upgrade. So beware. It's a slippery slope but this amp will reward upgrades all around it.
I spend most of my listening in class A on the "A" sound setting, but switch to the "B" profile for heavier rock, so the flexibility is appreciated. I seldom use the tone controls, but on occasion they've been just what I needed.
Recently, I had a problem with the Galion's remote. I contacted Thomas and received a new one in a couple of days. I have to say that being able to deal directly with Thomas is one of the unexpected benefits of the purchase.