1978 Bose PM-1 Power Mixer

And now, the Bose PM-1. A powerful case for professional sound. You don't need separate components to get professional quality sound. Not with the Bose PM-1 Powermixer. A single, compact package that gives you the high output, low distortion, and low noise you'd expect only from a component system. It's the only powered mixing console that gives you the features you need to get loud, clear, uncolored sound in virtually any kind of room...

1978 Bose PM-1 Powermixer Ad available at www.GuitarPulp.com