It's really nice high gain amp, I've purchased it in order to replace my Jetcity jca2112RC combo. Also considered Engl Ironball but Ironball uses EL84 output valves which Jetcity also has so I expected I wouldn't notice much difference (not sure if it does matter a lot but still wanted to try 6L6 amp).
Pros:
Lunch box sized, only 8kg, but still:
It's built like a tank, really, looks and feels very great.
Insane high gain sound on Gain II, exactly what I was looking for. Palm mutes have a lot of punch, power cords roar like a beast :D Sounds great with E standard tune (mahogany guitar, EMG JH SET pickups) and Drop C tune (ash guitar, Dimarzio Fusion Edge pickups).
Has RMS switch to lower output power (very nice for home usage).
Footswitch and bag included.
Cons:
It's really LOUD for bedroom even in low power mode. However any tube amp is loud, I've never turned master volume over 2 of 10 on my JetCity 20W combo. You will need to purchase an attenuator if you want to crank it up at home.
The noise when gain level is high. But AFAIK any high gain device will produce a lot of noise. Also I'm pretty sure that I have a lot of electrical interference at my home.
Doesn't have clean channel but it wasn't designed for cleans anyway. You can get pretty clean tones on Gain I with low gain level still.
Shared EQ for both channels. I don't use EQ a lot - everything on 12 o'clock is great default choice :) But people in other reviews complained that they can't find a great sounding EQ setup for both channels.
I recommend it to anyone who looks for high amp to play metal/progressive/etc.