Supro 1675RT Rhythm MasterFor those players who love the huge, bold sound of the 1 x 15 Thunderbolt amp, but need a lush, all tube reverb to fill out their sound, Supro presents the 1675RT Rhythm Master amplifier. Rooted in Supro tradition, this vintage inspired model is loaded with independent bass and treble controls, six spring long pan reverb, output tube tremolo and switchable power. The Rhythm Masters 35 Watt Class A (Cathode Bias) mode delivers a more spongy, vintage