not specifically a bass amplifier, the model #666 was advertised as
being suitable for bass instruments. However, it's design, which
consisted of four 8" speakers with 30 watts output, probably was a
little thin for bass reproduction. Still, the 4 speaker design was
innovative for the time. Controls were the same as the #1212A;
that is, two channels, with volume control for each, and a master tone
and vibrato controls. The model #666 sold for $139.90.