BasX A5

Circuit Topology

• The BasX A5 is a five channel power amplifier. The BasX A5 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):
  95 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):
  120 watts RMS per channel; into 8 Ohms.
  175 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):
  > 116 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): 1.2 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.
• 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 A5 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:
  26.5 lbs (unboxed)
  33 lbs (boxed)