It’s a Twin Reverb with a mad twist. I love the compressor and the Bob Moog filters. It’s loud, heavy and sensitive on the controls like a Doberman. Not for everyone but a really good amp - without tubes!
The reason modern solid-stade amplifiers suck is that serious musicians don't want them, so they're made as cheaply as possible. In the late 70s, before tubes became cool again, Gibson/Moog decided to make the best guitar amplifier possible. The LAB Series was the result. And boy, is it great. Loud and clean as a Twin Reverb, with great tone-shaping abilities. It takes some knowledge to get the best out of the slightly complex equalizer and the built-in compressor, but the reward is great. The speakers are Ceramic CTS units. While not at all bad, I wanted something with more clarity, so I swapped them for a couple of 70W Jensen ceramics. This really brought the best out of this extremely underrated amp.
My first real amp was this Lab Series, obtained from my friend and guitar teacher Erik it was too big and loud to use at home (there I used a pignose) so I took it with me to squater venue Bar&Boos where it became part of the backline and I got to play it every jam session