Proton 520b - STEREO AMPLIFIER, 740 cassette, Pioneer F-77 tuner

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For Sale: Nice matched up set of high end stereo components from the mid 1980's.

Everthing is tested and working well, no issues. The 520B amp has excellent crisp and clear sound quality with no hum or distorition.  Volume control, balance control, and switches just cleaed with electronic contact cleaner spray. The cassette deck has been careuflly tested on play, record, FF, RW, etc. and all is working well. Tape patch and heads just cleaned and demagnetized. Good sound quality, all controls good, display good, no issues. Features DBX, Dolby B, and Dolby C noise reduction all checked out. APS program search feature is working. Bright tape counter and display. Nice cosmetic condition.

The Pioneer tuner works 100% and gets excellent FM stereo reception even with just a short piece of wire for antenna. Stereo indicator light is working, signal strength lights working, auto search is working, 16 station memory tested good. Nice bright frequency display.

Notes from the WWW:

Proton 520B Integrated Amplifier

Power output: 20 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.015%

Damping factor: 300

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 87dB (MM), 96dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω (minimum)

Dimensions: 420 x 87 x 280mm

Weight: 5.2kg

Proton 740 Cassette Deck

  • Connectivity
    • 2 Mono Microphone Inputs
    • Headphones
  • Display
    • 4-Digıt Digital Counter
    • Linear Tape Counter
    • Peak Hold
    • Digital Peak-Reading Meters
    • Track Indicator
  • Exterior
    • Front Loading
    • Orientation Left
    • Black Finish
  • Head Configuration
    • 2 Head Desiǥn
    • 4 Track / 2 Channel
  • Indicators
    • Record Mute
  • Noise Reduction
    • Dolby-B Noise Reduction
    • Dolby-C Noise Reduction
    • MPX Filter
    • DBX Type II Noise Reduction
  • Operation
    • Memory Repeat
    • Memory Stop
    • Timer Recording/Playback
    • A-B Repeat
    • Full Logic Transport Control
    • Music Scan
  • Preamplifier
    • Output-Level Control
    • Individual Input Level Controls
  • Tape
    • Automatic Tape Type Selection
    • Chrome Tape Capabılity
    • Normal Tape Capabılity
    • Metal Tape Capabılity
  • Transport
    • Auto Shutoff
    • Mechanical Tape Loading
  • General
    • Stereo
  • Speed
    • 1⅞ ips - 4.76 cm/s
  • Electronics
    • Record Protection

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Send your zip code for ship quote- should be between $15.99 and $35.99 if you are in the continental U.S. (March 2017).



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