I have a GK ML/E with the foot switch in my rack. It's an amazing amp... 140w if I recall correctly. Awesome amp with incredible clarity and punch, and it has 2 channels, built in compressor, boost, reverb and chorus. Hasn't been used a hand-full of times since I started playing acoustic in 1993. Better than mint condition.
I was just thinking of buying a tube amp and selling this one. Still looking for one? If so, email me and I'll send you a picture (unless I figure out a way to get the pic to a URL host)