Vintage McGohan MS-506 50 Watt Audio Amplifier – Rack Mount PA Amp - $120 (Des Plaines)

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Up for sale is a McGohan MS-506 50-watt audio amplifier. This is a vintage rack-mount public address (PA) amplifier, commonly used in schools, offices, and commercial buildings for paging, background music, and white noise masking.

This unit has multiple microphone and auxiliary inputs, as well as bass, treble, and master volume controls. It powers on, all knobs and switches move freely, and it appears to be functional, but I am selling it as-is, untested further.

📌 Features

Model: McGohan MS-506

Power: 50 Watt Audio Amplifier

Inputs: 4x Mic, 2x Aux, Balanced Line In, Tape Recorder Out, Mixer Out, Power Amp In

Outputs: 4Ω, 8Ω, 25V, 70V speaker terminals

Rack-mount design

Controls for bass, treble, master, mic/aux volume

UL Listed

📌 Condition

Powers on (red power switch lights up)

Knobs and switches intact and responsive

Some cosmetic wear, scuffs, and scratches consistent with age

Front panel has old label tape markings (can be removed if desired)

Untested beyond power-on – selling as-is

📌 What’s Included

McGohan MS-506 amplifier (as shown in photos)

Power cord

post id: 7875142054

posted: 2025-08-20 10:20

updated: 2026-01-31 10:48

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Vintage McGohan MS-506 50 Watt Audio Amplifier – Rack Mount PA Amp -...

Up for sale is a McGohan MS-506 50-watt audio amplifier. This is a vintage rack-mount public address (PA) amplifier, commonly used in schools, offices, and commercial buildings for paging,...