Pioneer A-331

Data

General

• Manufacturer: Pioneer
• Model: A-331
• Year built: 1987
• Made in: Japan
• Type: Integrated amplifier
• Remote control: No
• Power consumption: 410 W (max)
• Dimensions: 420 x 352 x 126 mm
• Weight: 6.9 kg
• Color: black
• Original price approx.: 400 DM

Connections

• Number of inputs:
  • 1x Phono (Cinch): 2.5 mV / 50 kOhm (MM).

CD, Tuner, Line, 1x Tape In (Cinch): 150 mV / 40 kOhm

• Number of outputs:
  • 1x Tape Out (Cinch): 150 mV / 2.2 kOhm.
  • Headphones (6,3mm jack)
  • 2 pairs of loudspeakers (rotary terminals)

Technical Data

• Continuous power (at distortion factor)
  • 8 Ohm: 2x 40 W

4 Ohm: 2x 50 W

• Dynamic power
  • 8 Ohm: 55 W
  • 4 Ohm: 90 W
• Total harmonic distortion
  • 0.02% (20Hz - 20 kHz, 40W, 8 Ohm)
  • 0.03% (20Hz - 20 kHz, 50W, 4 Ohm)
• Frequency response:
  • PHONO (MM) 20 HZ to 20kHz ± 0.3 dB.

CD, TUNER, LINE, TAPE 5 HZ to 100kHz +0 dB / -3dB

• Stereo channel separation:
• Signal to Noise Ratio
  • Phono (MM, 5mV input): 89 db

CD, Tuner, Line, Tape: 108 db

• Attenuation factor:
• Tone control: analog (-30 dB)

Bass: ±8 dB (100 Hz) Treble: ±8 dB (10 kHz)

• Loudness: yes, key ( + 5 dB - 100 Hz / +3 dB - 10 kHz)

Special Features

• Recording selector switch
• Speaker pairs and headphones are switched via relays
• Metal front panel
• Phono - input MM
• Adapter sockets - for looping in an equalizer (bridged by default)

Remarks

Predecessor model:

• Pioneer A-33

Successor model:

• Pioneer A-333

Other models in the same series:

• Pioneer A-221
• Pioneer A-331
• Pioneer A-441
• Pioneer A-616
• Pioneer A-717

Pictures