Key Features

High-Performance 7-Channel Power Amplifier

Delivers 90W RMS per channel into 8Ω (all channels driven).

Delivers 125W per channel into 4Ω (all channels driven).

Up to 120W per channel into 8Ω or 175W per channel into 4Ω when only two channels are driven.

True Class A/B amplification with a large linear power supply.

Wide Bandwidth & Low Distortion

Frequency response: 10 Hz – 80 kHz.

THD+N typically below 0.02% at rated output.

Signal-to-Noise Ratio: over 115dB.

High damping factor (500+), providing excellent bass control.

Build Quality & Components

Heavy-duty toroidal transformer power supply.

Rugged steel and aluminium chassis.

Fully protected amplifier: thermal, short-circuit, overload, and fault safety.

Connectivity & Compatibility

7 RCA inputs (one per channel).

5-way binding posts for all speakers.

12V trigger input/output for automatic power-on with your AVR or processor.

Compatible with 4Ω–8Ω passive speakers.

Use Case & System Integration

Designed as a dedicated power amplifier, requiring a pre-amp, AV processor, or AVR with pre-outs.

Ideal for multi-channel home theatre setups such as 5.1, 7.1 or 5.1.2 with external amplification.

Great upgrade for AVRs that have pre-outs but weak internal amps.

Description

Emotiva BasX A7 – 7 Channel Stereo Power Amplifier

Audiophile quality Class A/B output stage.
Linear power supply with a hefty toroidal transformer and plenty of filtering.
Designed to sound great with every speaker and all types of music.
Perfect amp to power or upgrade a small 7.1 surround sound system.

Sound Quality First

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 let 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.

Overview

The BasX A7 is a seven-channel power amplifier that delivers 90 watts/channel into 8 Ohms and 125 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 A7 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 A7 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 A7 to deliver true audiophile performance and sound quality at an amazingly affordable price.

The BasX A7 is a great choice if you’re looking for a high-quality seven-channel amplifier to go with a processor in a new 7.1 channel surround sound system, or if you’re looking for an easy way to upgrade the amps in your existing surround sound receiver.

Specifications

Circuit Topology

The BasX A7 is a seven-channel power amplifier. The BasX A7 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)	90 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms. 125 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)	> 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 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

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

Protection	The BasX A7 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: 30 lbs (unboxed) 36 lbs (boxed)