This nice and perfectly working amplifier was part of the complete Portable Component Music System Stereo Suitcase.beautiful mini hifi system from 80's.

The amplifier measures 7 inches wide, 3 inches high, and 5-5/8 inches deep. Its total output is given as 36 watts, without specifying how this is divided among the speakers. The three high-level inputs (auxiliary, tape, and CD) are balanced within the amplifier for minimum noise pickup and are selected by a knob on the front panel. Other knobs control volume, balance, bass, and treble (the last three are center-detented). Slide switches control power and mono/stereo mode, and there is a red led pilot light.

As befits its portable status, the Model Eleven can operate from 115- or 230-volt AC power (50 or 60 Hz) or a 12-volt DC supply. The amplifier also provides a 9-volt DC output for a portable CD or tape player.