The JCM 800 blew them all out the back door and 500 yards down the alley. Dunno. Had to do something with entertainment value. This is just another amp review from a different perspective. I had been wanting to test drive some small amps to use for recording. My mastering studio is very small, especially for the JCM 800. I can handle cranking it, but due to the area I record in the sound pressure is too much for my mics. Have not run into this issue before in other studios, but there it is. So off I went to find some tiny tube monsters in search of that semi-clean crunch that the JCM 800s do so nicely for rhythm, and playing chords with passing tones without losing definition. Sort of that 'Angus' type sound. The guys at GC set me up with a closed back 2x12 cab and a Leslie West Dean to check these heads out. The Jet City Picovalve was the first I was interested in from the specs and reviews. Sadly, it was the first to fall. All settings revealed a sharp sandpapery metalic edge in the treble tones that would have been hard to disguise in a recording and maintain clarity. Now I'm not saying with the right tubes it might be different - but I was working with a new stock amp. The Blackstar HT5RH showed great promise, and generally speaking is a smokin' little amp. Better at the big bottom OD sounds for heavier music, IMHO... but the mids hit a wall when cleaning up to get that crunch sound I'm after. Nice clean channel, tho. It would certainly make an awesome low volume bedroom amp. I tried an Egnater Rebel when they first hit GC, and did not like it at all; so I was not inclined to spend any time with the Tweaker. After some prodding, I caved and gave it a shot. The sales guy set it up with a big bottom scooped sound that he apparently was keen on, but I don't have one of those faces that hides my thoughts well. He quickly flipped switches and tweaked the knobs, and suddenly it felt pretty damn close. That sparked my interest, and began fine tuning. It didn't 'feel' any louder than the 5 watt amps I had been checking out, but there was an excellent approximation of that dynamic touch responsive crunchy tone I was hunting. I had planned to check out the Orange Tiny Terror, but the Tweaker took up the rest of my visiting time. I'm not one of those guys who can just put down a chunk of money on demand, but I've started a jar for the Tweaker. Heard a lot of possibilty in this one. Don't know if this helps anyone else out that is on the hunt - it takes a lot of little descriptive terms to feel out if a tester is looking for the same things as you - but I hope it does. Cheers!