Recently serviced, good condition.
Here is how Boogie describe this extremely well made and useful power amp:
WHAT IS "SIMUL-CLASS"? Simul-Class power is like having two different kinds of power operating simul-taneously on each channel of the amplifier. One power section is wired in "Class A Triode" and uses two EL-34 tubes. "Class A” power is the oldest and purest form of amplification; it’s warm and "vocal" tone is the heart of the Simul-Class circuit. The other power section uses two 6L6 tubes, wired in the more modern and efficient "Class AB" configuration; this section provides the bulk of the "muscle" in the amplifier. And by combining these two "classes" of power design, the Simul-Class circuit reaps the rewards of both. The 30 watts of vintage Class A tone combines with 65 watts of efficient Class AB power to produce a total of 95 watts per channel of the warmest, most musical power you've ever heard! Or you can use the "Class A/Simul-Class" switch to turn off the Class AB (6L6) sections, and run the Class A (EL-34) sections by themselves. This allows you to drive the amp harder for greater power amp distortion, but at volume levels you can more easily control.