Yamaha 374, AX-470, AX-570, Stereo Amplifier SPECIFICATIONS

SPECIFICATIONS

Minimum RMS Output Power per Channel
(PURE DIRECT; ON)
<AX-570>
8 ohms, 20 Hz to 20 kHz, 0.015% THD
...............................................		100W+100W
6 ohms, 20 Hz to 20 kHz, 0.03% THD
[Except Scandinavia model]
...............................................		120W+120W
<AX-470>
8 ohms, 20 Hz to 20 kHz, 0.015% THD
[Except Europe model] ..............		65W+65W
[Europe model] ..........................		75W+75W
6 ohms, 20 Hz to 20 kHz, 0.03% THD
[U.S.A. and Canada model] .......		75W+75W
[Australia, U.K. and General model]
...................................................		70W+70W
[Europe (except Scandinavia) model]
...................................................		80W+80W
Dynamic Power per Channel
(by IHF Dynamic Headroom measuring
method)
<AX-570>
8/6/4/2 ohms.................	140/170/220/290W
<AX-470>
[Except Europe model]
8/6/4/2 ohms...................	95/115/135/160W
[Europe model]
8/6/4/2 ohms.................	115/135/160/180W
DIN Standard Output Power per Channel
(4 ohms, 1 kHz, 0.7% THD)
[Europe model only]
<AX-570> .........................................		150W
<AX-470> .........................................		110W
IEC Power (8 ohms, 1 kHz, 0.015% THD)
[Europe model only]
<AX-570> .........................................		110W
<AX-470> ...........................................		85W
Power Band Width
<AX-570>
8 ohms, 50W, 0.03% THD
..........................................	10 Hz to 50 kHz
<AX-470>
8 ohms, 35W, 0.03% THD
..........................................	10 Hz to 50 kHz
Damping Factor
8 ohms, 20 Hz–20 kHz
<AX-570> ............................................		320
<AX-470> ............................................		240
Damping Factor (DIN)
4 ohms, 40 Hz
[Australia, U.K. and Europe models]
<AX-570> ............................................		160
<AX-470> ............................................		120
Input Sensitivity/Impedance
PHONO MM .....................	2.5 mV/47 k-ohms
PHONO MC <AX-570 only>
..........................................	160 µV/220 ohms
CD/TUNER/TAPE/AUX
........................................	150 mV/47 k-ohms
MAIN IN <AX-570 only>
.............................................	1.0V/10 k-ohms

Maximum Input Signal (1 kHz, 0.01% THD) <AX-570>

PHONO MM ...................................	150 mV
PHONO MC......................................	10 mV
<AX-470>
PHONO MM ...................................	115 mV
Output Level/Impedance
<AX-570>
REC OUT ......................	150 mV/220 ohms
PRE OUT............................	1.0V/470 ohms
<AX-470>
REC OUT .........................	150 mV/1 k-ohm

Headphone Jack Rated Output/ Impedance <AX-570>

Output Level (8 ohms, 1 kHz, 0.015% THD)

..........................................................	0.47V
Impedance ..................................	470 ohms
<AX-470>
Output Level (8 ohms, 1 kHz, 0.019% THD)
..........................................................	0.46V
Impedance ..................................	390 ohms
Frequency Response (20 Hz to 20 kHz)
CD/TUNER/TAPE/AUX ....................	0±0.5 dB
MAIN IN <AX-570 only> .................	0±0.5 dB

RIAA Equalization Deviation (20 Hz to 20 kHz)

PHONO MM......................................	±0.3 dB
PHONO MC <AX-570 only> ............	±0.5 dB

Total Harmonic Distortion (20 Hz to 20 kHz) <AX-570>

PHONO MM to REC OUT (3V) ......	0.003%
PHONO MC to REC OUT (3V).......	0.007%
CD/TUNER/TAPE/AUX to PRE OUT (1V)
........................................................	0.005%
CD/TUNER/TAPE/AUX to SP OUT
(50W/8 ohms) .................................	0.008%
<AX-470>
PHONO MM to REC OUT (3V) ......	0.003%
CD/TUNER/TAPE/AUX to SP OUT
(35W/8 ohms) .................................	0.008%
Intermodulation Distortion
(Rated output/8 ohms) ........................	0.01%
Signal-to-Noise Ratio (IHF-A Network)
<AX-570>
PHONO MM (5 mV Input Shorted)
.........................................................	92 dB
PHONO MC (0.5 mV Input Shorted)
.........................................................	76 dB
CD/TUNER/TAPE/AUX (Input Shorted)
<AX.......................................................-470>	110 dB
PHONO MM (5 mV Input Shorted)
.........................................................	88 dB
CD/TUNER/TAPE/AUX (Input Shorted)
(PURE DIRECT; ON) .....................	110 dB
Residual Noise (IHF-A Network)
(PURE DIRECT; ON)...........................	70 ∝V

Channel Separation (Vol. –30 dB)

<AX-570>

PHONO MM/MC (Input Shorted

1 kHz/10 kHz) .........................			75 dB/60 dB
CD/TUNER/TAPE/AUX (Input 5.1 k-ohms
Terminated 1 kHz/10 kHz)			......65 dB/50 dB
<AX-470>
CD/TUNER/TAPE/AUX (Input 5.1 k-ohms
Terminated 1 kHz/10 kHz)			......65 dB/50 dB
Tone Control Characteristics
BASS:	Boost/cut ................		±10 dB (20 Hz)
TREBLE:	Boost/cut...........		±10 dB (20 kHz)
Filter Characteristics <AX-570 only>
SUBSONIC FILTER .........		15 Hz, –18 dB/oct
Continuous Loudness Control
Attenuation ............................			–30 dB (1 kHz)
	(Level related equalization)
Gain Tracking Error (0 to –60 dB)
<AX-570>..............................................			2 dB
<AX-470>..............................................			3 dB

Power Supply

[U.S.A. and Canada models]

..........................................	AC 120V, 60 Hz
[Australia and U.K. models]
..........................................	AC 240V, 50 Hz
[Europe model]..................	AC 230V, 50 Hz
[General model]
................AC 110/120/220/240V, 50/60 Hz
Power Consumption
<AX-570>
[U.S.A. model] ...................................		200W
[Canada model] ...................		330 VA, 260W
[Australia and U.K. models]		...............210W
[Scandinavia model] ..........................		180W
[Europe (except Scandinavia) and General
models]..............................................		210W
<AX-470>
[U.S.A. model] ...................................		160W
[Canada model] ...................		280 VA, 220W
[Australia and U.K. models]		...............170W
[Scandinavia model] ..........................		160W
[Europe (except Scandinavia) model]
..........................................................		190W
[General model].................................		170W

AC Outlets

[Except Australia, U.K. and Europe models

of AX-470]

SWITCHED OUTLETS

..........................................	100W max. total
Dimensions (W x H x D)
...................................	435 x 150 x 388.5 mm
	(17-1/8” x 5-7/8” x 15-5/16”)
Weight
<AX-570> .....................	11 kg (24 lbs. 3 oz.)
<AX-470> ..................	9.5 kg (20 lbs. 14 oz.)
Accessories ...........	Remote control transmitter
	Batteries

Specifications subject to change without notice.

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