Emotiva BasX A7+ Seven Channel Power Amplifier

The BasX A7+ is a seven-channel power amplifier that delivers 90 watts per channel into 8 Ohms and 125 watts per channel into 4 Ohms, all channels driven, with a rated THD+N of < 0.02% and an A-weighted signal-to-noise ratio of 112 dB. It features a robust linear power supply with an oversized toroidal transformer, a refined Class A/B output stage, transparent fault protection, and both 12V trigger input and output for system integration.

New for the A7+ are balanced XLR inputs on every channel, in addition to standard unbalanced RCA inputs—offering improved noise rejection and wider compatibility with processors and receivers that support preamp outputs. High-quality five-way speaker terminals accept banana plugs, spade lugs, or bare wire, making it easy to connect to your preferred speaker setup.

The A7+ is designed to provide clean, reliable power in a wide range of systems. Use it to power a full 7.1 surround sound setup, an immersive Atmos or DTS:X configuration, or upgrade an AVR with preamp outputs for dramatically improved dynamics and headroom. With stable operation into both 8 and 4 Ohm speaker loads, it’s a versatile amplifier that adapts to your needs.

This combination of real-world flexibility, solid engineering, and high-end performance at an accessible price point makes the BasX A7+ a powerful addition to any serious home theater system.

Features

• 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.

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 (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 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)

Support

• Manual