All valve, 30 watt, Class A operation channel switching combo. This unit incorporates the Rocker 30 head in a high-quality cabinet constructed using 13 ply high density 18mm birch plywood. Loaded with a heavy duty 12" Celestion Vintage 30 loud speaker. The great qualities of the Rocker 30 head are combined with the convenience of its own acoustically-tuned speaker enclosure.