Pioneer QX-401

Commentary

This is a 4 ch receiver that can play a variety of 4 channels.

Discrete 4-channel tape playback, regular / SQ matrix 4-channel, and CD-4 disc playback with a demodulator.

FET is used for the FM front end, and IC and ceramic filter are used for the IF part to improve selectivity.
In addition, the linear type dial scale and large meter are adopted, and accurate tuning point catch is possible.

A muting switch is installed to prevent unpleasant inter-station noise.

Each front and rear has its own tone control.
In addition, it is equipped with 3 balance control which can control the balance of front left and right, rear left and right, front and rear.

Two pairs of rear speakers can be connected simultaneously.

Model Rating

Type	4-channel receiver
FM Tuner Section
Practical sensitivity (IHF)	2.2 μ V
Capture Ratio (IHF)	3.0dB
Effective selectivity	45 dB or more
S/N	65dB
Image Interference Ratio (82 MHz)	55 dB or more
IF Interference Ratio (78 MHz)	80 dB or more
Spurious interference ratio	85 dB or More (82 MHz)
AM suppression ratio	50dB
Harmonic distortion factor (100% modulation)	Mono : not more than 0.6% Stereo : 0.8% or less
Stereo separation	40 dB or More (1 kHz)
Residual carrier level	35 dB or more
Antenna	300 ohm balanced 75 Ω Unbalanced Type
Muting	ON/OFF enabled
<AM Tuner Section>
Practical sensitivity (IHF)	15 μ V
Selectivity (1 MHz)	25 dB or more
S/N (30% modulation)	50dB
Image Interference Ratio (1 MHz)	45 dB or more
IF interference ratio	30 dB or more
Antenna	Ferrite bar antenna
Amplifier Unit
Music Power (IHF)	108W (4 Ω) 80W (8 Ω)
Effective power	20 Hz to 20 kHz output (2-ch drive) : 10W + 10W/10W + 10W (8 Ω, 1% or less distortion factor) Effective output (1 kHz, 2 ch drive) : 15W + 15W/15W + 15W (4 Ω) 13W + 13W/13W + 13W (8 Ω) Effective output (1 kHz, 4-ch drive) : 11Wx4 (4 Ω) 10Wx4 (8 Ω)
Harmonic distortion factor	1% or Less (Effective Output)
Cross modulation distortion factor	1% or Less (Effective Output)
Output Bandwidth (IHF)	2 ch Drive : 10 Hz to 30,000 Hz 4 ch Drive : 15 Hz ~ 20,000 Hz
Frequency characteristic	10 Hz to 100,000 Hz ± 3 dB
Damping factor	40 (8 Ω, 1 kHz)
Input Sensitivity / Impedance (1 kHz at effective output)	Phono MAG : 2.3mV/50k Ω AUX, Tape Mon : 200mV/90k Ω
Recorded output	Tape Rec (pin-jack) : 200 mv Tape Rec(DIn):19mV
Tone control	Bass : 100 Hz, -12.5 dB to + 13 dB Treble : 10 kHz, -8.5 dB to + 11.5 dB
Equalizer	RIAA S.T.D
Loudness (at volume -40dB)	100Hz:+10dB 10kHz:+5dB
Hum and noise (IHF)	Phono : 70 dB or more AUX : 90 dB or more
<General>
Rated power consumption	75W
Maximum Power Consumption	150W
External dimensions	Width 450x Height 144x Depth 350 mm
Weight	10.1kg