• Country
• United States of America (USA)

• Manufacturer / Brand
• Philips USA

• Year
• 1978

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 126381

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) / see remarks: 110 to 240 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: High Fidelity Laboratories Pre-Amplifier 572 22AH572 /00 /44 - Philips USA

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 457 x 155 x 380 mm / 18 x 6.1 x 15 inch

• Notes

• Ultra low distortion pre-amplifier.

  Frequency response: 10 Hz to 40 kHz (Aux and Tuner)
  Inputs: Phono 1, Phono 2, Aux, Tuner, Tape
  Outputs: Tape, Pre-amp

  The amplifier can be used in conjuction with Motional Feedback Speakers, eliminating the need for a power amp.

  This device can be adjusted for line voltages of 110, 127, 220 or 237 Volts by making internal changes to the wiring of the transformer.

  Differences between versions /00 and /44 are currently unknown.

• Net weight (2.2 lb = 1 kg)
• 10 kg / 22 lb 0.4 oz (22.026 lb)

• Mentioned in
• HiFi Jahrbuch 9, G. Braun Verlag Karlsruhe 1978, S. 5-106

• Literature/Schematics (1)
• -- Original-techn. papers.

• Literature/Schematics (2)
• - - Manufacturers Literature (User manual)

• Author
• Model page created by Hartmut Daniels † 22.11.16. See "Data change" for further contributors.

• Other Models

• Here you find 43 models, 41 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips USA