The BasX A4 is a four channel power amplifier. The BasX A4 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.

• Power Output (ALL channels driven)

100 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms

130 watts RMS per channel; 1 kHz; THD < 1%; into 4 Ohms

• Power Output (two channels driven):
100 watts RMS per channel; into 8 Ohms

175 watts RMS per channel; into 4 Ohms

• Power Bandwidth (at rated power; 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):
> 115 dB; ref rated power; (A-weighted)

• Minimum Recommended Load Impedance (per channel): 4 Ohms (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): 1.2 V

• Gain: 29 dB

• Input Impedance: 27 kOhms

• 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

• Status LEDs change to red to indicate a fault condition.

• 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 A4 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:
• 26 lbs (unboxed)
• 32 lbs (boxed)