• Country
• Japan

• Manufacturer / Brand
• Pioneer Corporation; Tokyo

• Year
• 1987

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 248387

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 120; 220/240; 110/120-127/220/240 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 120 W (undistorted)

• Material
• Metal case

• from Radiomuseum.org
• Model: Stereo Amplifier A-441 - Pioneer Corporation; Tokyo

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 420 x 122 x 316.5 mm / 16.5 x 4.8 x 12.5 inch

• Notes

• A hi-fi stereo integrated amplifier housed in a black case (or silver case, W Germany only) with continuous average power output of 2 x 60 watts into 8 ohms (2 x 70 watts into 8 ohms DIN). With low impedance driving capability and Pioneer's "Non-Switching" circuit type II. Bass and Treble tone controls, switches for Loudness, Phono selector (MM, MC), CD Direct, Speakers (A, B), Subsonic filter, Loudpeakers On/Off and a jack for headphones. On the rear panel, RCA phono sockets for input Phono, CD, Tuner, and Video/Aux, for input/output Tape1 and Tape2, terminals for 2 pairs of loudspeakers (A, B).

  Specification
  Continuous power output (both channels driven) 20Hz—20kHz, THD 0.008%, into 8Ω	58W + 58W
  DIN continuous power output (both channels driven)
  1kHz, THD 1%, into 8Ω  1kHz, THD 1%, into 4Ω	70W + 70W 100W + 100W
  IEC continuous power output (both channels driven)  63Hz—12.5kHz, THD 0.7%, 8Ω  63Hz—12.5kHz, THD 0.7%, 4Ω	68W + 68W 98W + 98W
  Dynamic power output (on EIA dynamic test signal)  8Ω  4Ω  2Ω	70W + 70W 105W + 105W 150W + 150W
  Total harmonic distortion (measured by Audio Spectrum Analyzer)  20Hz—20kHz, 58W, 8Ω	0.008%
  Input sensitivity/impedance  PHONO (MM)  PHONO (MC)  CD, TUNER, AUX, TAPE	2.5mV/50kΩ 0.2mV/100Ω 150mV/33kΩ
  Output level/impedance  TAPE REC	150mV/2.2kΩ
  Frequency response  PHONO (MM)  PHONO (MC)  CD, TUNER, AUX, TAPE	20Hz—20kHz +0.3dB 20Hz—20kHz ±0.5dB 5Hz—80kHz +0dB,-3dB
  Filter (SUBSONIC)	15Hz (-6dB/oct.)
  S/N ratio (IHF short circuit, A network)
  PHONO (MM, 5mV input)  PHONO (MC, 0.5mV input)  CD (DIRECT)  CD, TUNER, AUX, TAPE	93dB 74dB 105dB 100dB
  S/N ratio (DIN, continuous power/50mW)
  PHONO (MM)  CD (DIRECT)  CD, TUNER, AUX, TAPE	74dB/60dB 86dB/63dB 86dB/60dB

  Versions/Power requirements

  KC	Canada	120V AC 60Hz
  HE	Europe	220, 240V AC 50/60Hz switchable
  HB	UK	220, 240V AC 50/60Hz switchable
  HEZ	W Germany	220, 240V AC 50/60Hz switchable
  SD	General	110/120/220/240V AC 50/60Hz with voltage selector

  Power consumption:  550W (HE, HB, HEZ), 430VA (KC), 530W (Others)

• Net weight (2.2 lb = 1 kg)
• 8.1 kg / 17 lb 13.5 oz (17.841 lb)

• Mentioned in
• - - Manufacturers Literature (1987 Pioneer Hi-Fi Separates Guide)

• Literature/Schematics (1)
• - - Manufacturers Literature (Service manual Pioneer A-441 dated Apr 1987)

• Author
• Model page created by Gildo Bosi. See "Data change" for further contributors.

• Other Models

• Here you find 1140 models, 1125 with images and 200 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Pioneer Corporation; Tokyo