This is a vintage 300 watt Sunn head from the 80s. I’ve had it for about 10 years. It’s lived in my studio for the past 5. Some of the pots could use a little contact cleaner, but the amp is fully functional. I have a video demoing it from this week that is available. It’s got that killer Sunn tone. This thing is super rad on stage or in a studio. Sunn added a bunch of extremely and innovative features that most vintage amps don’t have such as a hi/lo crossover with blender knob, a dedicated effects loop, power amp in and pre amp out, built in compressor, in an endless amount of tones that can be sculpted through its unique active boost/cut eq circuits, and tone shaped inputs.