Pioneer A-445

Data

General

  • Manufacturer: Pioneer
  • Model: A-445
  • Type: Integrated amplifier
  • Years of manufacture: 1989 - 1990
  • Made in: Japan
  • Colors: Black, Silver A-445-S
  • Remote control: no
  • Power consumption: 550 W
  • Dimensions (WxHxD): 420 x 123 x 330 mm
  • Weight: 8 kg
  • Original price approx.: 500 DM


Technical Data

  • Continuous power (with distortion factor)
    • 8 Ohm: 2 x 60 W / 0,009% * 4 Ohm: 2 x 80 W / 0,009

4 Ohm: 2 x 80 W

  • Dynamic power
    • 8 Ohm: 75 W
    • 4 Ohm: 110 W
  • Frequency response:
    • PHONO (MM) 20 HZ to 20kHz ± 0.3 dB

PHONO (MC) 20 HZ to 20kHz ± 0.5 dB

  • Total harmonic distortion: 0.008 %
  • Noise floor: 107 dB
  • Inputs:
    • PHONO (MC/MM)
    • TUNER
    • CD
    • Line/AUX

2x TAPE/MD/DAT

  • Separable pre- and power amplifier (IN-OUT/PRE-OUT)
  • Connections for 2 speaker pairs A + B individually switchable
  • Controls:
    • Volume

balance Bass treble

  • Muting button
  • Loudness button
  • Subsonic button
  • Line Direct switch


Special Features

  • Super Linear Circuit (SLC): by cancelling the non-linearity of one component with the complementary non-linearity of the other, the lowest possible distortion, higher stability and flat frequency response are achieved. Overall, better sound reproduction is achieved thanks to the excellent open-loop frequency response.
  • Six-position recording selector switch.
  • Honeycomb-ribbed chassis, honeycomb-structured heat sink and honeycomb damper feet to protect against resonance and microphonic effects.
  • Digital sound quality even at low impedances: High stability to impedance curve fluctuations.
  • "Non-Switching" Type II: Amplification without switching distortion; improved thermal stability and high linearity for natural sound.
  • Direct Connection: Signal reaches the output via the shortest possible path, contributing to sound purity.
  • Clean Ground System: Ground side free of leakage components due to chassis isolated from transformers and heat sinks.
  • DIRECT switch: For direct connection to the volume control.
  • Outputs for two pairs of speakers: Choice of separate or common operation.
  • High-gain phono equalizer amplifier.


Remarks



Pictures

  • [[Picture: Pioneer A-445

Pioneer A-445.jpg


Test reports

  • Report in "FonoForum" 12 / 1989


Links