The best thing about it is it can do the cranked up tube sound at low volume. A normal tube amp, even a 1watt, will needs to be cranked up for it to sound good. This doesn't. Or the tube amp will begin to distort if I turn it up but I want a clean sound. This can stay clean and be turned up.
It is very flexible, I think there's a video online comparing this to a real tube amp side by side for sound. I certainly can't tell the difference!
Sure, it's too small to be gig with but I don't intend to do that, I just want to practice without annoying the neighbours so this is perfect.
Your solid state does not sound like a tube amp. I don't need to justify that statement That isn't to say that it doesn't sound good, mind.
Also, you only have to drive the tubes for them to sound their sweetest and this doesn't necessarily mean high volume in modern amps. You just can lower the amplitude of the signal going to the speaker using post gain while driving the **** out of the valves pre gain.
As for tube amps distorting after being cranked, ha. They do, but only if you tell them to.
I had a tiny terror which had enough head room to play clean over the top of a live band in 7watt mode. Watt for watt, a tube amp will always deliver more headroom and volume than a transistor circuit.