Inter-M A-120 is a simple and economical multi-purpose desk top mixer-amplifier providing a cost-effective solution to public address and similar applications. Two versions are available with outputs of 60 and 120 watts respectively into direct (4 ohms) or distributed (70V/100V line) speaker systems. Each has five inputs; three microphone, balanced, low impedance and two auxiliary, unbalanced, high impedance. Microphone one has selectable vox priority over all other inputs. Bass and treble tone controls are provided. The A120 amplifier is designed for reliable service in permanent installations, and comes complete with short-circuit and thermal protection and is ideal for voice reproduction and BGM applications.