• Country
• United States of America (USA)

• Manufacturer / Brand
• Grommes Precision Electronics, Inc.; Chicago (IL)

• Year
• 1959

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 154153

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

• Number of Tubes
• 5

• Valves / Tubes
• 12AX7 12AX7 6V6GT 6V6GT 6X5GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 - 120 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Precision 20PA - Grommes Precision Electronics,

• Shape
• Tablemodel, low profile (big size).

• Notes
• The Grommes Precision Electronics Model Precision 20PA is an AC Operated 5 Tube Audio Amplifier.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 11-59, Set 465, Folder 13)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 75 models, 68 with images and 51 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grommes Precision Electronics, Inc.; Chicago (IL)