From what I can see there are a bunch of amps from Vox that use either an 12AX7 or a "nutube" in the preamp. I *think* these all have class D power amps with a tube in the pre-amp. Since modern Vox is Korg, I am guessing they use some sort of digital modeling technology. I am always a little suspicious when a company uses the term "analog." In this case it seems to mean the the preamp signal is analog, but here may be some digital effects tech on board as well.

The Harley Benton/Stage Right is a fairly simple design. There are a couple of transistors in the reverb circuit, but all the gain/power in the preamp and amp sections seem to be from tubes. That said, a true 1960's tube amp (or even a modern one like a Blues Jr.) would have a tube to power the reverb. I suspect that the tube vs solid state may have a small effect on the sound of the reverb, but am also guessing it's not a lot, since there are pretty good reverbs in pedals. Traditionally there would also be a tube rectifier. I don't see how a solid state vs tube rectifier could make a difference in sound, but that could be because of how little I know about virtually everything electronic. Others may have a better take on this. Laney seems to have eliminated them in it's current tube designs which may be why the HB doesn't have one.

What's a little puzzling to me is why there aren't more relatively cheap tube amps. The tube set used by in the SR/HB/Laney is the same as a Blues Jr. which, and can be had for around $50 on the internet. I get why boutique hand wired amp using these tubes is expensive. But I don't quite get why an amp with a printed circuit board would need to be all that costly. After sinking about $100 in a speaker and tubes...it seems like the rest of the cost can't be much more than $50-75 in a factory context.