McIntosh Maximum Performance Indicator – Model: MI-3

McIntosh Maximum Performance Indicator
Model: MI-3
Powered by 8 vacuum tubes
PDF Owners Manual & Service Manual available upon request.
Glass faceplate & cabinet are in excellent condition.
Unit is fully operational.
It is a professional oscilloscope, relative signal strength indicator. calibrated FM deviation meter, calibrated balance meter. and phase indicator. These instruments are used by FM stations to determine the best possible performance for your listening enjoyment.
Two McIntosh tuners available under separate listings.