EMOTIVA BasX A5-Five Channel Power Amplifier


The BasX A5 is a great choice if you’re looking for a high quality five channel amplifier to power the 5 main channels in a surround sound system, or if you’re looking for an easy way to upgrade the amps in your existing surround sound receiver.

The BasX A5 is a five channel power amplifier that delivers 95 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 116 dB. The BasX A5 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 A5 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 A5 to deliver true audiophile performance and sound quality at an amazingly affordable price.

The BasX A5 is a great choice if you’re looking for a high quality five channel amplifier to go with a processor in a new 5.1 channel surround sound system, or if you’re looking for an easy way to upgrade the amps in your existing surround sound receiver.


  • Designed first and foremost to sound great in all types of audio systems with all types of music.
  • Great sounding Class A/B output stage ensures smooth, detailed sound and incredibly natural imaging, without a trace of harshness or strain.
  • Low noise, wide bandwidth design, and a highly optimized input stage, lets you hear everything your high definition sources have to offer.
  • Totally stable with real world speakers in real systems; not just on a test bench.


  • A heavy duty linear power supply with an oversized toroidal power transformer delivers plenty of current to drive even difficult speakers.
  • Top quality parts and construction throughout deliver years of reliable trouble-free service.
  • Heavy steel chassis with milled aluminum faceplate offers strength and rugged good looks.
  • Double sided FR4 circuit boards, with plated-through holes, help optimize signal paths and minimize the need for point-to-point wiring.


  • Unbalanced inputs via industry standard RCA connectors accept all standard unbalanced interconnects.
  • Heavy duty insulated five-way speaker binding posts allow you to use a wide range of speaker cables with bare wires, lugs, or banana plugs.
  • Remote trigger input and output allow the BasX A5 to control and be controlled by other trigger-enabled equipment.
  • The BasX A5 is designed to operate on either 115 VAC or 230 VAC at 50/60 Hz and will automatically detect and configure itself for the proper line voltage.


  • Their redesigned front panel gives the new BasX A5 a sleek modern aesthetic that fits well with virtually any room décor.


  • Audiophile-grade fault protection is entirely transparent under normal listening conditions, yet protects the amp and your other equipment from virtually all common faults.


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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 (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 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



The BasX A5 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.




• 17” wide x 4” high x 15-1/2” deep (unboxed, not including connectors)

• 21-1/2” wide x 8” high x 21” deep (boxed)


• 26.5 lbs (unboxed) • 33 lbs (boxed)

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