For those who are interested, I did end up purchasing this amp and wrote the following review on GC website after several months of use:
Comments about Hughes & Kettner TubeMeister TM18H 18W Tube Guitar Amp Head:
This amp both looks and sounds great. I play a lot of Jerry Garcia/Grateful Dead music and occasionally gig so I normally use the clean channel with the gain rolled up. I have this paired with a JBL E-120 in a custom Baltic birch 1x12 cab. Really does a good job of getting into the Jerry Zone (Jerry used modified Fender Twin preamps with McIntosh power amps connected to JBLs for much of his career). The power soak function is really useful: 1 watt at home is plenty loud; 18 watts for gigging in bars is great. I have yet to mic through the PA or use the redbox DI function. The size, weight, and bag make the head highly portable -- which is helpful if you know how heavy an E-120 is! The only marks against the amp from me would be the lack of on-board reverb and the difference in volume between the clean and gain channel. The first problem I solved with a TC Electronics Hall of Fame mini reverb which works well. If you need reverb, factor the cost of a reverb pedal into the purchase price. As for volume discrepancy between channels, it's not really a problem, just a fact to consider. Even when just practicing with the band the full 18 watts is desired to keep up with bass and drums to keep relatively clean tones. As a bonus, the blue led/plexi front just looks cool. I get many compliments whenever out in public with the amp.
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