Overview: The Yamaha A-S1000 Integrated Stereo Amplifier features a
built-in two-channel amplifier with A & B speaker outputs and six analog inputs.
Floating Balanced Circuit Design: The perfectly symmetrical, fully new
floating balanced power amplifier maximizes the performance of the analog
amplifier by reducing distortion and noise.
Independent Power Supplies: The stereo amplifier features four
independent high-capacity power supplies.
Aluminum Front-Panel and Heavyweight Feet: The A-S1000 features an
aluminum front-panel and newly developed heavyweight feet to suppress
vibrations. The foot-height of the unit is adjustable.
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.
High Current Stereo Amplifier: The Yamaha A-S1000 features a highly dynamic, powerful
stereo amplifier with low impedance drive capability. The stereo amplifier is
rated at 90 watts x 2-channel at 20-20kHz, in 8-ohms with 0.02% THD; 105 watts x
2-channel at 20-20kHz, in 6-ohm with 0.02% THD; and 140 watts x 2-channel at
20-20kHz, in 4-ohm with 0.02% THD.
Triple Parallel Electronic Volume and Tone Controls: The Yamaha
A-S1000 is equipped with triple parallel electronic volume and tone controls. The stereo amplifier features independent bass (50Hz) and
treble (20kHz) controls so you can increase or decrease the low and high frequency
Note: The volume and tone controls do not effect the amplifiers
Main Direct Input or Record Output.
Balance: You can adjust the sound output balance of the left and right
speakers connected to the amplifier.
Audio Mute: The Audio Mute function reduce the current volume level by
approximately 20 dB.
Speaker Selector: The Speaker Selector switch allows you to select
only A speakers, only B speakers, A+B speakers, or no speakers; so you can
control which speakers are playing.
Remote Control: The integrated amplifier comes supplied with an IR
remote control for wireless operation of the unit. The remote control can also
be used to control select Yamaha audio components such as a CD player or AM/FM
tuner. The remote has a range of 20 feet at an angle of 30-degrees left-to-right
of the unit's front-panel IR sensor.
Analog Inputs/Outputs: The Yamaha A-S1000 integrated stereo amplifier
is equipped with six analog RCA stereo inputs for connecting an external audio
source such as a CD player, AM/FM tuner, Turntable, and/or cassette deck; as
well a preamp or AV receiver. There
is also one analog RCA stereo output 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 or MC cartridge.
Main Direct Input: One of the A-S1000's analog inputs is labeled Main
Direct Input. This input allows you to connect your preamplifier or AV receiver
directly to the A-S1000 and use the Yamaha stereo amplifier as a power amplifier
to drive a pair of speakers in your system.
Note: Audio signal coming into the amplifier's Main Direct Input
is only output through the speaker outputs of the A-S1000. No audio signal
will by output from the stereo amplifier's Pre-Out, Rec Out, or Headphone
Pre-Out: The Yamaha integrated stereo amplifier is equipped with a
stereo preamp output for connecting a powered subwoofer or to use the A-S1000 as
a preamplifier and connect it to a larger power amplifier to power your
Speaker Outputs: The Yamaha stereo amplifier features
gold-plated binding post
terminals for its A & B speaker outputs. The speaker outputs are color-coded for
easy connection. You can use the A & B speaker outputs to power two pair of
separate speakers or you can bi-wire a single pair of speakers.
Note: If you use two sets (A and B) of speaker, the impedance of
each speaker must be 8-ohm or higher. When only using on set of speakers (A
or B), use speakers with an impedance of 4-ohm or higher.
Headphone Output: The A-S1000 integrated amplifier is
equipped with a front-panel 1/4" headphone output for connecting a pair of
headphones (sold separately). Once a set of headphones are connected, the
amplifier's speaker outputs mute automatically.
Note: The headphones do not function for the amplifier Main Direct