• Country
• Taiwan (Republic of China)

• Manufacturer / Brand
• Proton Electronic Industrial Co., Ltd; Taipei

• Year
• 1990 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 281529

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

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

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Stereo Preamplifier AP-1000 - Proton Electronic Industrial

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 420 x 76 x 360 mm / 16.5 x 3 x 14.2 inch

• Notes

• Proton Stereo Preamplifier Model AP-1000.
  Frequency response: 20Hz to 20kHz +/-0,2dB
  Total harmonic distortion: 0.1%
  Input sensitivity: 0.2mV (MC), 2.5mV (MM), 150mV (line)
  Signal to noise ratio: 70dB (MC), 91dB (MM), 103dB (line)
  Output: 21V (Pre out Max)
  Bass Control (at 100 Hz, Boost/Cut): +/-10dB/-10dB
  Treble Control (at 10000 Hz, Boost/Cut): +/-10dB/-10dB
  Infrasonic Filter (10 Hz): -4dB

• Net weight (2.2 lb = 1 kg)
• 6.5 kg / 14 lb 5.1 oz (14.317 lb)

• Mentioned in
• - - Manufacturers Literature (Service Manual)

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 6 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Proton Electronic Industrial Co., Ltd; Taipei