ToP-ART/High Current Amplification: Yamaha uses the ToP-ART
(Total Purity Audio Reproduction Technology) design concept, which combines the
latest and best technologies, parts, and circuit designs, to maximize sound
quality. High Current Amplification uses superior quality components from input
to output to achieve high current power with low impedance.
Stereo Amplifier: The Yamaha A-S500 features a dynamic,
powerful stereo amplifier with low impedance drive capability. The amp is rated
at 85 watts x 2-channels, measured from 20-20 kHz into 8-ohms with 0.019% THD
(100 watts x 2-channels, measured from 20-20 kHz into 6-ohms with 0.038% THD).
Dual Heat Sinks: The Yamaha integrated amplifier employs
dual aluminum-extruded heat sinks to ensure effective heat dissipation and help
achieve crisp, clean sound.
Aluminum Front-Panel: The Yamaha A-S500
integrated amplifier features an elegant aluminum front-panel to resist
Bass and Treble: The stereo amplifier features independent
bass (20 Hz) and treble (20 kHz) controls so you can increase or decrease the
low and high frequency response (+/-10dB).
Balance: You can adjust the output balance of the left and
Loudness: The A-S500 features a continuously variable
loudness control (0 to -30 dB), so you can retain a full tonal range at any
volume level; thus compensating for the human ear's loss of sensitivity to
high and low frequency ranges at low volume.
Pure Direct: The Pure Direct switch is used to best reproduce
the sound of any source by bypassing bass, treble, loudness, and balance circuits.
Speaker Selector: The Speaker Selector switch allows you to
select only A speakers, only B speakers, A and B speakers simultaneously, or no
speakers; so you can control which speakers are playing.
Impedance Switch: The amplifier features a rear-panel impedance
switch to match the impedance level of the speakers connected. Choose High or Low:
- High: Select High if using one set (A
or B) of speakers with impedance of 6-ohm or higher; when
bi-wiring the impedance of the speaker must also be 6-ohms
- Low: Select Low if using one set (A or
B) of speakers with the impedance of 4-ohm to 6-ohm; if using
two sets (A and B) of speakers simultaneously, the impedance
of each speaker must be at least 8-ohms; when bi-wiring the
impedance of the speaker must also be 4-ohms to 6-ohms.
Record Out Selector: The A-S500 features a record output
selector switch which is independent of the input source selector; this allows
you to record the selected output source while listening to another input source.
The unit's volume control does not affect the fixed record level output.
Remote Control: The included IR remote (RAS5) controls this
unit and select Yamaha AM/FM tuners, CD players, and iPods (when the optional
YDS-12 iPod dock is added).
Analog Inputs/Outputs: The Yamaha A-S500 integrated stereo
amplifier is equipped with six analog stereo (RCA) inputs for connecting external
audio sources such as a CD player, AM/FM tuner, Turntable, and/or cassette deck.
There are also two pair of RCA outputs for recording through the amplifier.
Note: The unit's Phono input also features
a ground terminal and is designed to connect a turntable with
an MM cartridge.
Speaker Outputs: The Yamaha stereo amplifier features binding
post terminals for its A & B speaker outputs. You can use the A & B speaker
outputs to power two pair of speakers, or bi-wire a single pair of compatible
speakers. The terminals are not 5-way binding posts because a plastic collar
prevents their use with spade lugs and they are too far apart for dual banana
Headphone Output: The A-S500 integrated amplifier is equipped
with a front-panel 1/4" headphone output for connecting a pair of headphones
(sold separately). The headphone output and speaker outputs will work simultaneously;
you will need to rotate the speaker selector switch on the front-panel to the Off
position to turn off the sound from your connected speakers.