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About This Listing
Late 1940s Masco MA-25N
Originally a Public Address System, Now re-purposed into a fully restored amplifier.
All components have been tested/replaced if out of spec. I ran this amp wide open for hours.
Tubes have all been tested and ran for audio/instrument clarity. 30 Watts Class A Original Output, Replaced Power with Transformer from Era. Sounds amazing, tuned, ready to inspire!
Original Knobs and Paint.
Amp has been altered from it's original wiring circuit. I jumper all channels as one. This mod allows you complete access to all of the channels if you like, or just one at a time. They all sound slightly different.
Tube Lineup: 6J7 Preamp (4), one for each channel 6SC7 Preamp and Phase (2), bass and treble controls 6L6GC Power (2) 5U4 Sigle Rectified (1)
New grounded cord and plug 1/4" stereo input, Three Mic Inputs 1/4" mono outputs in 4,8,16, ohm operation Can only use one output at a time
I answer all questions, and ship anywhere. If you are an international buyer please message me a postal code for a shipping quote.
