YAMAHA AX-490
¥ 39,800 (released in 1995)
Commentary
A pre-main amplifier with functions such as a CD direct amplifier.
Yamaha's original linear damping circuit has been adopted to achieve a stable damping factor that does not depend on the frequency change of the source by thoroughly reducing the internal impedance through the use of a large number of extremely thick wires.
A powerful LiD (low-impedance driveability) power supply is used for the power supply section, and even if the impedance of the speaker decreases due to a large transformer or a large capacity electrolytic capacitor, stable drive performance is always obtained.
The power amplifier section has a symmetrical design from the input terminal to the output terminal to eliminate interference between the left and right channels.
Equipped with a pure direct switch, the input signal can be directly connected to the power amplifier by bypassing circuits such as tone control.
Equipped with a switch-over type CD direct amplifier.
In this system, the S/N ratio in actual use is improved by 10 dB by mounting a CD direct amplifier with ultra-low noise immediately after the input terminal, and the impedance is also reduced, making it less susceptible to external noise.
Phono terminal is mounted.
The volume uses an electric volume.
It is equipped with tone control and continuous loudness.
It comes with a system remote control that allows you to operate Yamaha components such as CDs.
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Model Rating
| Type | Pre-main amplifier |
| Rated Output (20 Hz ~ 20 kHz) | 100W + 100W (6 Ω, strain 0.038%) |
| Dynamic Power | 220W + 220W (2 Ω) |
| Frequency characteristic | 20 Hz to 20 kHz ± 0.5 dB |
| Signal-to-noise ratio | Phono MM:82dB CD, Tuner, Aux, Tape : 110 dB |
| Damping factor | 240 (20 Hz ~ 20 kHz, 8 Ω) |
| Accessory circuit | Tone control Continuous loudness |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 170W |
| External dimensions | Width 435x Height 146x Depth 386 mm |
| Weight | 9.2kg |
| Attachment | Wireless Remote Control |