• Country
• United States of America (USA)

• Manufacturer / Brand
• Fairchild Camera and Instrument Corp.; Clifton, N.J.

• Year
• 1947

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 225031

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

• Number of Tubes
• 12

• Valves / Tubes
• 6SJ7 7N7 7A4 7A4 7A4 7A4 2A3 or 6B4G or 300B 2A3 or 6B4G or 300B 5U4G 7N7 6Y6G 6SJ7 991

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

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

• Power out
• 35 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Amplifier 620 - Fairchild Camera and

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

• Notes

• From Radio & Television Retailing August 1947
  The No. 620 power amplifier is the first of 12 matched sound equipment units being currently announced; the other including No. 621 mike pre-amplifier, line preamps and boosters, switch panels with volume indicators and monitor take-offs, mixers, equalizers, bridging devices and auxiliary power supplies. No. 620 delivers 35W into 500 ohms isolated output with less than 5% distortion, within 1 db.

• Source of data
• Radio Retailing (Radio & Television R.)

• Mentioned in
• -- Schematic

• Author
• Model page created by Heiko zur Mühlen. See "Data change" for further contributors.

• Other Models

• Here you find 19 models, 9 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fairchild Camera and Instrument Corp.; Clifton, N.J.