Denon PMA-255

Data

General

• Manufacturer: Denon
• Model: PMA-255
• Type: Integrated amplifier
• Years of manufacture: 1975 - 1977
• Made in: Japan
• Color: front silver, wooden cabinet
• Remote control: no
• Power consumption: 370 / 18 W (max/idle)
• Dimensions: 396 x 147 x 281 mm (WxHxD)
• Weight: 11.2 kg
• Original price approx.: 1'200 DM

Connections

• Number of inputs:
  • 2x Phono: 2.3 mV / 47 kOhm
  • Tuner, 2x AUX: 200 mV /100 kOhm
  • 2x Tape (1x Cinch, 1x DIN): 200 mV /100 kOhm
• Number of outputs:
  • 2x Tape (1x Cinch, 1x DIN).
  • Headphones (6.3 mm jack, front)
  • 2 pairs of speakers

Technical Data

• Continuous power (20-20,000 Hz)
  • 8 Ohm: 2 x 55 Watt

4 Ohm: 2 x 65 Watt

• Dynamic power
  • 8 Ohm: 2 x 100 Watt
  • 4 Ohm: 2 x 85 Watt
• Total harmonic distortion: < 0.08% (or less at rated outpuut)
• Attenuation factor: 50 (8 Ohm)
• Frequency response:
  • 5 Hz - 100,000 Hz (1W, -1 dB).
  • Power bandwidth: 5 - 50,000 Hz
• Signal-to-noise ratio: (extraneous voltage)
  • Phono: 70 dB

High level: 85 dB

• Stereo channel separation:
• Tone control:
  • Bass: ±10 dB / 100 Hz
  • Treble: ±10 dB / 10 kHz
• Loudness: yes
• High Filter: 9 kHz (12 dB/oct)
• Low Filter (Subsonic): 20 Hz (12 dB/oct)
• Mute: -20 dB, -10 dB

Remarks

• Other models in the same series:
• Denon PMA-232
• Denon PMA-255
• Denon PMA-350 Z
• Denon PMA-500 Z
• Denon PMA-700 Z

• Corresponding Tuner
• Denon TU-332
• Denon TU-355
• Denon TU-500

Pictures

• Image: Denon PMA-255

• Excerpt from brochure: Denon PMA-255, TU-355