• Country
• United States of America (USA)

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

• Year
• 1950 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 176581

• Number of Tubes
• 8

• Valves / Tubes
• 6SC7 6SL7 6SL7 6SN7 6SN7 6V6 6V6 5Y3

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 60 cycles, 105-125 Volt

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

• Power out
• 12 W (17 W max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: High Fidelity Amplifier with Expander MA-12EX - Masco Mark Simpson Company Inc

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 330 x 230 x 200 mm / 13 x 9.1 x 7.9 inch

• Notes

• Masco MA-12EX High Fidelity Amplifier with Expander.

• Net weight (2.2 lb = 1 kg)
• 5.6 kg / 12 lb 5.4 oz (12.335 lb)

• Price in first year of sale
• 132.50 USD

• Literature/Schematics (1)
• Radio Master's Catalog, 15th ed., 1950-51, pg. B-16.

• Author
• Model page created by Hannes Gerber. See "Data change" for further contributors.

• Other Models

• Here you find 135 models, 103 with images and 106 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