• Country
• United States of America (USA)

• Manufacturer / Brand
• ESS Electrostatic Sound Systems, Inc.; Sacramento, CA

• Year
• 1974

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 198743

• • Brand: ESS

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / see remarks: 120 or 220 Volt

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

• Power out
• 200 W (undistorted)

• Material
• Metal case

• from Radiomuseum.org
• Model: Model 200 Power Amplifier - ESS Electrostatic Sound

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 420 x 160 x 295 mm / 16.5 x 6.3 x 11.6 inch

• Notes

• Power rating: 100 W RMS per channel, 20 - 20,000 Hz into 8 Ω
  Frequency response: ±25 dB, 22 - 41,000 Hz (1 W); ±1 dB, 12 - 133,000 Hz (1 W)
  Distortion: 0.2%, 20 - 20,000 Hz up to rated output

  Oiled walnut finish wood case available.

  Power supply:

  • version for USA: 120 VAC, 60 Hz
  • export: 220 VAC

• Mentioned in
• Popular Electronics, 12/1974, p.73

• Literature/Schematics (1)
• - - Manufacturers Literature

• Author
• Model page created by Bo Soerensen. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 3 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from ESS Electrostatic Sound Systems, Inc.; Sacramento, CA