Killer sounding little head, engineered from Blackstar UK and geared toward the rock/metal player. The HT Studio 20H is a dual channel amp that does offer a clean channel, with simply a tone control, but most of the tweaking, and the secret of this amp, lies in the overdrive channel which features 3 EQ knobs, plus separate gain and volume controls (plus a master!), and a unique ISF control to dial in characteristics of British/Marshall or American (Fender/Boogie/etc.), and anything in-between. This channel provides more gain than you’ll probably ever use, much preferred over amps that don’t quite go over the edge. The clean tone I find very impressive, despite the paucity of control, with a warm, fat tone, and a nice breakup beginning at around 1/3 volume. It has some nice features including a very good sounding digital reverb, plus an effects loop switchable from +4dB/-10dB, a simulated speaker out, and speaker outs for a single 16 ohm, single 8 ohm, or dual 16 ohms, letting you run a standard 4X12, or a full stack. For an excellent YouTube demo, click here. This amp’s in mint condition and has seen just a few hours of home use. These are $499 new but get this nice used one for $339.