Emotiva BasX A4 Stereo Amplifier/4 Channel Power Amplifier

The BasX A4 is a four channel Power Amplifier that delivers 100 watts / channel into 8 Ohms and 130 watts / channel into 4 Ohms, all channels driven, with a rated THD+N of < 0.02%, and an A-weighted S/N ratio of 115 dB. The BasX A4 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 A4 to be used with almost any Pre-Amp or Processor and audiophile grade five way speaker terminals accept banana plugs, spade lugs or bare wire. These features combine to enable the BasX A4 to deliver true audiophile performance and sound quality at an amazingly affordable price.

Key Features

• Four-channel Power Amplifier
• 100 watts / channel into 8 Ohms all channels driven
• 130 watts / channel into 4 Ohms all channels driven
• THD+N < 0.02%
• A-weighted S/N ratio: 115 dB
• Transparent fault protection
• Trigger input and output
• Auto signal detect
• High quality industry standard unbalanced RCA inputs

Key Specification

Circuit Topology

• 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

Audio Specifications

• 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
  (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 k Ohms

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 upto 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

General

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:
  11.79 kg (unboxed)
  14.51 kg (boxed)