The BasX A-800 is an eight channel power amplifier, specifically designed for use in multi-zone and whole home applications. The BasX A-800 has eight individual amplifier channels, each of which features a carefully designed high current, short signal path, Class A/B output stage, with advanced microprocessor-controlled monitoring and protection circuitry. The eight amplifier channels in the A-800 are arranged to provide the absolute maximum in terms of flexibility: each channel may be used separately, or as part of a stereo pair; each stereo pair may be supplied with its own input signal, or receive its signal from a common stereo input bus; and each pair of channels may optionally be bridged into a single channel with higher power (for a total of four bridged high-powered channels). In addition, the BasX A-800 may be configured to be turned on manually, or by a trigger signal from a preamp or processor, or to turn on automatically when it senses an audio signal on any of its inputs.
Power Output (two channels driven)
50 watts RMS per channel; 20 Hz - 20 kHz; THD < 0.03%; into 8 Ohms.
80 watts RMS per channel; 20 Hz - 20 kHz; THD < 0.1%; into 4 Ohms.
Power Output (8 channels; all channels driven)
35 watts RMS per channel; 1 kHz; THD < 0.03%; into 8 Ohms.
50 watts RMS per channel; 1 kHz; THD < 0.1%; into 4 Ohms.
Power Output; BRIDGED MODE (4 channels; all channels driven)
100 watts RMS per channel; 20 Hz - 20 kHz; THD < 0.03%; into 8 Ohms.
Broad Band Frequency Response
Individual channel mode: 20 Hz to 80 kHz (+ / - 1.8 dB).
Bridged mode: 20 Hz to 80 kHz (+ / - 3 dB).
THD + noise
< 0.05% (A-weighted); at rated power; 1 kHz; 8 Ohms
Signal to Noise Ratio (8 Ohm load)
> 110 dB (A-weighted); ref rated power.
> 95 dB (A-weighted); ref 1 watt.
Minimum Recommended Load Impedance (per channel)
Individual channel mode: 4 Ohms; which equals one 4 Ohm load or two paralleled 8 Ohm loads.
Bridged mode: 8 Ohms.
Damping Factor (8 Ohm load)
Speaker Output Connections
Audiophile grade, 5-way binding posts.
Linear power supply with heavy duty torodial transformer.
Input Sensitivity (for rated power; 8Ohm load)
Individual channel mode: 29 dB.
Bridged mode: 35 dB.
Unbalanced (RCA); one per channel.
Unbalanced (RCA); one stereo pair for Bus input.
27 kOhms (unbalanced).
Trigger Input: 5 - 12 V (AC or DC); <10 mA input current required.
Trigger Output: 12 VDC; can drive any load up to 120 mA.
115 VAC or 230 VAC @ 50 / 60 Hz (automatically detected).
Front Panel Controls and Indicators
Standby; push button (halo ring changes color to indicate Standby or On).
Status LEDs; one per channel; blue.
Status LEDs change to flashing red to indicate a fault condition.
Rear Panel Controls
AC Power Switch; rocker switch (switches AC main power).
Power Mode; slide switch; selects Always On, Trigger, or Auto-On Mode.
Bus Switch; slide switch; (4) 1 per Zone; selects either the Bus or individual input for the Zone.
Bridge Switch; selects either individual channel or bridged amplifier operation.
Status LEDs switch; disables front panel Status LEDs.
The BasX A-800 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.
17” wide x 4” high x 16” deep (unboxed; including feet)
17” wide x 3-1/2” high x 16” deep (unboxed; without feet)
21-1/2” wide x 8” high x 21-1/4” deep (boxed).
26 lbs (net)
32.4 lbs (boxed)