Re: Koch Amps?
I owned a Twintone II Combo for a couple of years. I never tried it with an external cab or with another speaker. I think I should have.
It's very well built. Neat, sturdy, all that I could hope for.
The clean tones are gorgeous and the spring reverb very tasty. Definitely on par with the best ones I've tried out. I didn't really try it out with pedals.
The overdrive tone had great definition and nice dynamics. In the end it was too bright and thin for my taste. I had treble and presence at zero and it just went to sounding worse without getting enough meat without the brightness. It also maybe lacked a bit of gain for some more extreme metal I was playing occasionally.
In the end I sold it because I couldn't get all the tones I wanted. I get them with my THD Univalve. If I had a chance to own multiple amps I'd love to get one. It does its own thing very well.
Koch amps are reasonably priced here in Europe. The Twintone Head costs about the same as a Marshall Head. Also about half of a M/B Dual Rectifier. Shipping costs, taxes and import company cuts can be obscene.