Technics SU-A 4 MK 2

Data

General

• Manufacturer: Technics
• Model: SU-A 4 MK 2
• Type: Preamplifier
• Years of manufacture: 1983 - 1987
• Made in: Japan
• Color: Black
• Power consumption: 15 W
• Dimensions: 430 x 97 x 330 mm (WxHxD)
• Weight: 8 kg
• Original price approx.: 3'000 DM

Connections

• Number of inputs:
  • Phono MM: switchable 1 mV or 2.5 mV / 47 kOhm, max. 150 mV.
  • Phono MC: switchable 0.07 mV or 0.25 mV / 30 Ohm or 470 Ohm, max. 15 mV

Tuner: 150 mV / 47 kOhm CD: 150 mV / 47 kOhm Aux: 150 mV / 47 kOhm

• • Tape Play 1, 2: 150 mV / 47 kOhm
  • Video:
• Number of outputs:
  • Tape Rec 1, 2: 150 mV, 600 ohms.
  • Video Rec:
  • Pre Out: 2 V, max. 8 V, 2 Ohm

Technical Data

• Frequency Response:
  • Phono: RIAA standard ± 0.15 dB.

High level: DC - 100'000 Hz (+ 0 dB, - 3 dB)

• Distortion factor: 0.006 %
• Signal-to-noise ratio:
• External voltage spacing: (nominal power)
  • Phono MM: 77 dB

Phono MC: 76 dB

• • Tuner/Aux: 100 dB
• Tone control
  • Super Bass: 20 Hz, 0 - +10 dB
    • Crossover frequencies: 75 Hz, 150 Hz
  • Bass: 50 Hz, ± 5 dB
    • Crossover frequency: 500 Hz
  • Treble: 20 kHz, ± 5 dB
    • Crossover frequency: 2 kHz
  • Super highs: 50 kHz, ± 10 dB
    • Crossover frequency: 8 kHz
• Loudness: + 7 dB at 50 Hz
• High Filter: 7 kHz, - 6 dB / octave
• Low Filter (Subsonic): 20 Hz, -12 dB / octave
• Muting: - 20 dB

Special Features

• Gold-plated Cinch connectors

Remarks

• Other models of the same series:
• Technics preamplifier
  • Technics SU-A 4 MK 2
  • Technics SU-A 6 MK 2

• [[Technics power amplifier
  • Technics SE-A 3 MK 2
  • Technics SE-A 5 MK 2

Pictures

• Excerpt from brochure: Technics station wagon SU-A 4 MK 2 / SE-A 3 MK 2

Links

• Report at "Adrian Kingston" [1]