• Country
• United States of America (USA)

• Manufacturer / Brand
• Masco Mark Simpson Company Inc., Long Island

• Year
• 1953 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 360477

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 13

• Valves / Tubes
• 6J7 6J7 6J7 6J7 6SC7 6SJ7GT 6SL7GT 6SN7GT 807 807 5Y3GT 5Y3GT 5Y3G

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 60Hz, 117V=110-120 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Masco MA-77C - Masco Mark Simpson Company Inc

• Shape
• Tablemodel, with any shape - general.

• Notes

• Masco model MA-77C is an AC operated 5 channel audio amplifier.Typo on first page: Trade name MA-77R has to be MA-77C.

   

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 190, folder 7, dated 1-53)

• Author
• Model page created by Dirk Taekels. See "Data change" for further contributors.

• Other Models

• Here you find 141 models, 110 with images and 112 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Masco Mark Simpson Company Inc., Long Island