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.