SPECIFICATIONS

POWER SECTION

• Minimum RMS Output Power

(8 Ω , 20 Hz to 20 kHz, 0.019% THD)

 

[AX-497]

85 W + 85 W

[AX-397]

60 W + 60 W

(6 Ω , 20 Hz to 20 kHz, 0.038% THD)

 

[AX-497]

100 W + 100 W

[AX-397]

70 W + 70 W

• Dynamic Power (IHF) (8/6/4/2 Ω)

 

[AX-497]

130/150/185/220 W

[AX-397]

100/120/140/150 W

• Maximum Output Power

(1 kHz, 0.7% THD, 4 Ω) [U.K. and Europe models only]

[AX-497]

120 W

[AX-397]

95 W

(1 kHz, 10% THD, 8/6 Ω)

 

[AX-497]

 

[Asia, General, China and Korea models only] ....

130/150 W

[AX-397]

 

[Asia, General and China models only]

100/110 W

IEC Output Power [U.K. and Europe models only] (1 kHz, 0.019% THD, 8 Ω)

[AX-497]

100 W

[AX-397]

75 W

• Power Band Width

 

[AX-497] (0.04% THD, 42.5 W, 8 Ω)

10 Hz to 50 kHz

[AX-397] (0.04% THD, 30 W, 8 Ω)

10 Hz to 50 kHz

• Damping Factor

 

20 Hz to 20 kHz, 8 Ω

240 or more

• Maximum Input Signal

 

PHONO (1 kHz, 0.003% THD)

115 mV or more

CD, etc. (1 kHz, 0.5% THD)

2.2 V or more

• Frequency Response

 

CD, etc. (20 Hz to 20 kHz)

0 ± 0.5 dB

CD/DVD DIRECT AMP ON (10 Hz to 100 kHz)

...... 0 ± 1.0 dB

• RIAA Equalization Deviation

 

PHONO

± 0.3 dB

• Total Harmonic Distortion

 

PHONO to REC OUT

 

(20 Hz to 20 kHz, 3 V)

0.003% or less

CD, etc. to SP OUT

 

(20 Hz to 20 kHz, 42.5 W, 8 Ω)

0.009% or less

• Signal to Noise Ratio (IHF-A Network)

 

PHONO (input shorted)

88 dB or more

CD (input shorted)

 

CD/DVD DIRECT AMP ON

110 dB or more

• Residual Noise (IHF-A Network)

 

[AX-497]

 

CD/DVD DIRECT AMP ON

35 µV

PURE DIRECT ON

90 µV

[AX-397]

 

CD/DVD DIRECT AMP ON

35 µV

CD/DVD DIRECT AMP OFF

100 µV

CONTROL SECTION

• Input Sensitivity/Input..................................................................Impedance

2.5 mV/47 kΩ

PHONO

CD, etc

150 mV/47 kΩ

• Output Level/Output Impedance

 

REC OUT

195 mV/1.6 kΩ or less

[AX-497]

[AX-397]

165 mV/1.6 kΩ or less

• Headphone Output/Impedance

CD, etc. (Input 1 kHz, 150 mV, 8 Ω , 0.019% THD)

[AX-497]

0.3 V/680 Ω

[AX-397]

0.25 V/680 Ω

• Channel Separation

 

CD, etc. (5.1 kΩ input shorted, 1/10 kHz)

65/50 dB or more

• Tone Control Characteristics

 

BASS

 

Boost/Cut (20 Hz)

±10 dB

Turnover Frequency

350 Hz

TREBLE

 

Boost/Cut (20 kHz)

±10 dB

Turnover Frequency

3.5 kHz

• Continuous Loudness Control

 

Attenuation (1 kHz)

–30 dB

GENERAL

• Power Supply

 

 

[U.S.A. and Canada models]

AC 120 V, 60 Hz

[Asia model]

AC 220/230–240 V, 50/60 Hz

[General model]

AC 110/120/220/230–240 V, 50/60 Hz

[China model]

AC 220 V, 50 Hz

[Korea model] (AX-497 only)

AC 220 V, 60 Hz

[Australia model]

AC 240 V, 50 Hz

[U.K. and Europe models]

AC 230 V, 50 Hz

• Power Consumption

 

 

[AX-497]

 

 

[U.S.A. and Canada models]

220 W, 300 VA

[Asia model]

190 W

[Other models]

220 W

[AX-397]

170 W

Standby Power Consumption [Asia and General models]

(110/120 V)

1.1 W

(220/230-240 V)

2.7 W

[Other models]

1.1 W

(The power consumption is 0 W when the POWER switch is released outward to the OFF position.)

Maximum Power Consumption [General models only] (1 kHz, 6 Ω , 10% THD)

[AX-497]

490 W

[AX-397]

400 W

• AC Outlets

 

 

[U.K. and Australia models]

1 (Total 100

W maximum)

[Korea model]

None

[General model]

3 (Total 50

W maximum)

[Other models]

3 (Total 100

W maximum)

• Dimensions (W x H x D)

435 x 151 x 390 mm

 

(17-1/8” x 5-15/16” x 15-11/32”)

• Weight

 

 

[AX-497]

9.1 kg (20 lbs. 1 oz.)

[AX-397]

8.3 kg (18 lbs. 5 oz.)

* Specifications are subject to change without notice.

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Yamaha AX-497, AX-397 owner manual Specifications, Power Section, Control Section, General

AX-397, AX-497 specifications

The Yamaha AX-497 and AX-397 are two notable integrated amplifiers from Yamaha's renowned hi-fi audio lineup, designed to deliver exceptional sound quality and performance for audiophiles and music enthusiasts alike. While both models share a strong foundation, they exhibit distinct features and technologies that cater to different listening preferences.

The Yamaha AX-497 is the more advanced of the two, boasting a power output of 80 watts per channel at 8 ohms, which provides ample power for driving various speakers effectively. The AX-497 utilizes Yamaha's proprietary ToP-ART (Total Purity Audio Reproduction Technology) design, which focuses on preventing signal degradation and ensuring a clean, natural sound. This model features a discrete amplifier configuration, providing lower distortion levels and a more dynamic soundstage.

One of the standout features of the AX-497 is its comprehensive tone control system. Users can finely adjust the bass, treble, and balance, allowing for personalized sound tailored to individual preferences and room acoustics. Additionally, the AX-497 includes a direct input for bypassing tone controls during critical listening sessions, effectively providing an uncolored sound reproduction.

On the other hand, the Yamaha AX-397 offers a slightly reduced power output of 60 watts per channel at 8 ohms, making it suitable for smaller speaker systems and listening environments. Despite this lower output, the AX-397 still maintains an impressive sound quality, thanks to a similar ToP-ART design that ensures purity in audio reproduction.

The AX-397 is equipped with a high-quality phono stage, allowing for a seamless connection with turntables, which is becoming increasingly popular among vinyl enthusiasts. Additionally, it features a simple yet elegant user interface with easy-to-use controls for volume, input selection, and tone adjustments.

Both models utilize a robust build quality, reflecting Yamaha's commitment to durability and longevity. The sleek design of the amplifiers complements any audio setup, adding a touch of sophistication.

In summary, the Yamaha AX-497 and AX-397 integrated amplifiers are distinguished by their power outputs, features, and target users. The AX-497 is ideal for those seeking higher power and extensive control over sound, while the AX-397 suits casual listeners who appreciate quality sound in a more compact form. Regardless of the choice, both amplifiers exemplify Yamaha's dedication to delivering superior audio experiences.