Stereo receiver made in the early seventies. Same look as the amplifiers 590 and 591. FM goes to 104 Mhz. Three FM stations can be programmed with the dedicated scroll wheels located on the lower left side. 2 x 30 Watts Class A.
"The BBSM-6 is a three-way, medium power, phase correlated monitor with an internal high level crossover. Its ability to deliver high SPL, low distortion and excellent imaging has made it the monitor of choice with engineers the world over for more than a decade." (Westlake's brochure)