The BasX A3 is a three channel power amplifier that delivers 140 watts / channel into 8 Ohms and 200 watts / channel into 4 Ohms, all channels driven, with a rated THD+N of < 0.02%, and an A-weighted S/N ratio of 112 dB. The BasX A3 features a heavy-duty linear power supply, high-quality Class A/B amplification, transparent fault protection, and a trigger input and output. High quality industry standard unbalanced RCA inputs enable the BasX A3 to be used with almost any preamp or processor and audiophile grade five way speaker terminals accept banana plugs, spade lugs, or bare wire. These features combine to enable the BasX A3 to deliver true audiophile performance and sound quality at an amazingly affordable price.

The BasX A3 is the ideal choice to power a 3.1 channel system, to upgrade the front three channels of a surround sound receiver, or for anywhere where three channels of great sounding clean power are needed

Circuit Topology

• The BasX A3 is a three channel power amplifier. The BasX A3 combines classical audiophile amplifier architecture, based on a heavy-duty linear power supply, and a carefully designed high current short signal path Class A/B output stage, with advanced microprocessor-controlled monitoring and protection circuitry, to deliver superb sound quality at a truly reasonable price.

Audio Specifications

• Power Output (ALL channels driven): 140 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms. 200 watts RMS per channel; 1 kHz; THD < 1%; into 4 Ohms.
• Power Output (two channels driven): 150 watts RMS per channel; into 8 Ohms. 250 watts RMS per channel; into 4 Ohms.
• Power Bandwidth (at rated power; 4 Ohm - 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.02 dB)
• Broad Band Frequency Response: 10 Hz to 80 kHz +0/-1.8 dB
• THD + noise: < 0.02% (A-weighted); ref rated power
• Signal to Noise Ratio (8 Ohm load): > 112 dB; ref rated power; (A-weighted).
• Minimum Recommended Load Impedance (per channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads).
• Damping Factor (8 Ohm load): > 500.
• Input Sensitivity (for rated power; 8 Ohm load): 1.25 V.
• Gain: 29 dB.
• Input Impedance: 27 kOhms.

Input And Output Connections

• Input Connections: Unbalanced (RCA); one each per channel.
• Speaker Output Connections: Audiophile grade 5-way binding posts.
• Trigger: 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.

Power Requirements

• 115 VAC or 230 VAC @ 50 / 60 Hz (automatically detected).

Front Panel Controls and Indicators

• Standby: push button.
• Status LEDs: one per channel; blue. Standby LED: amber.

Rear Panel Controls

• AC Power switch: rocker switch (switches AC main power).
• Status LEDs switch: disables front panel Status LEDs.

Protection

• The BasX A3 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.

Mechanical

• Dimensions: 17” wide x 4” high x 15-1/2” deep (not including connectors). 21-1/2” wide x 8” high x 21” deep (boxed).
• Weight: 25 lbs (unboxed) 31 lbs (boxed)

Downloads

Download Product Manual