Stereo Amplifier A-331
Pioneer Corporation; Tokyo
- Country
- Japan
- Manufacturer / Brand
- Pioneer Corporation; Tokyo
- Year
- 1987
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 285574
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 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Power out
- 80 W (undistorted)
- Material
- Metal case
- from Radiomuseum.org
- Model: Stereo Amplifier A-331 - Pioneer Corporation; Tokyo
- Shape
- Book-shelf unit.
- Dimensions (WHD)
- 420 x 120 x 316.5 mm / 16.5 x 4.7 x 12.5 inch
- Notes
-
A hi-fi stereo integrated amplifier housed in a black or silver metal case (W Germany only) with continuous power output of 2 x 40 watts into 8 ohms. With tone controls, switches for tape monitor, loudness, speaker selection, jack for headphones, RCA phono sockets for input Phono, CD, Video/Aux, for input/output Tape1, Tape2 and terminals for 2 pairs of loudspeakers.
Specification Continuous Average Power Output
40 Watts per channel min. into 8Ω
from 20Hz—20,000Hz
with no more than 0.02% THDContinuous power output
(both channels driven)
20Hz—20kHz, THD 0.02%, 8Ω
40W+40WDIN continuous power output
(both channels driven)1kHz, THD 1%, 8Ω
1kHz, THD 1%, 4Ω55W+55W
72W+72WIEC continuous power output
(both channels driven)63Hz—12.5kHz, THD 0.7%, 8Ω
63Hz—12.5kHz, THD 0.7%, 4Ω53W+53W
70W+70WDynamic power output
(on EIA dynamic test signal)8Ω
4Ω
2Ω55W+55W
90W+90W
100W+100WTotal Harmonic Distortion
(measured by Audio Spectrum Analyzer)20Hz—20kHz, 40W, 8Ω 0.02% Input sensitivity/impedance PHONO(MM)
CD, TUNER, VIDEO/AUX, TAPE2.5mV/50kΩ
150mV/33kΩOutput level/impedance
TAPE REC
150mV/2.2kΩFrequency response
PHONO (MM),
CD, TUNER, VIDEO/AUX, TAPE
20Hz—20kHz ±0.3dB
5Hz—80kHz +0dB,-3dBTone control
BASS
TREBLE
±8dB (100Hz)
±8dB (10kHz)S/N ratio
(IHF short circuit, A network)PHONO (MM, 5mV input)
CD (DIRECT)
CD, TUNER, VIDEO/AUX, TAPE88dB
105dB
100dBS/N ratio
(DIN, continuous power/50mW)PHONO (MM)
CD (DIRECT)
CD, TUNER, VIDEO/AUX, TAPE73dB/60dB
86dB/63dB
86dB/60dBVersions/Power Requirements
KC Canada 120V AC 60Hz HE Europe 220V, 240V AC 50/50Hz (switchable) HB UK 220V, 240V AC 50/50Hz (switchable) HEZ W Germany 220V, 240V AC 50/50Hz (switchable) Power consumption: 410W, 330VA (KC)
Made in Japan
- Net weight (2.2 lb = 1 kg)
- 7 kg / 15 lb 6.7 oz (15.419 lb)
- Mentioned in
- - - Manufacturers Literature (1987 Hi-Fi Components catalogue)
- Literature/Schematics (2)
- - - Manufacturers Literature (Service Manual Pioneer A-331 A-331-S dated Apr 1987)
- Author
- Model page created by Edoardo Sigismondo. See "Data change" for further contributors.
- Other Models
-
Here you find 1143 models, 1128 with images and 201 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Pioneer Corporation; Tokyo
Collections
The model Stereo Amplifier is part of the collections of the following members.