Emotiva

BasX A3+ Three-Channel Amplifier

Name: BasX A3+ Three-Channel Amplifier
Brand: Emotiva
SKU: EMOTIVA-BASX-A3-THREE-CHANNEL-AMPLIFIER

Model AMP-BASX-CHAN-A3+ · Series BasX

The BasX A3+ is the ideal choice to power a 3.1 channel system. Upgrade the three channels of a surround sound receiver for great sounding clean power. Shop online today!

At a glance

All specifications

Power: 140 W per channel
Standby: push button
Status LEDs: one per channel; blue
Standby LED: amber
Weight: 25 lbs (unboxed)31 lbs (boxed)

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Overview

The cure for an overworked receiver.

This three-channel power amplifier takes over the hardest job in most systems, driving your left, center, and right speakers so your AVR can focus on processing and switching instead of struggling for power.

Connect it to an AV processor, stereo preamp, or any AVR with AVR preamp outputs (usually labeled PRE OUT) using RCA or balanced XLR inputs. A smooth Class A/B amplifier output stage and heavy-duty linear power supply with an oversized toroidal transformer deliver clean, low-noise performance with confident speaker control, while microprocessor monitoring and transparent protection help keep everything safe and drama-free. Add 12V trigger in/out for easy power sequencing, and enjoy the peace of mind of a 3-year warranty.

Common uses:

• Power the front LCR in a surround system for clearer dialogue and steadier imaging

•Take the strain off an AVR by offloading the three most demanding channels

•Build a clean, punchy 3.1 system with dedicated amplification

Want a quick check that your receiver has PRE OUTs, or help choosing RCA vs XLR? Contact us, we're real humans who will help you get it right.

Features

Smooth Class A/B Sound
This three-channel Class A/B amplifier is designed to sound smooth, detailed, and natural, with stable imaging and no added harshness. A low-noise, wide-bandwidth design and optimized input stage help you hear more from your sources..
Heavy-Duty Linear Power
A heavy-duty linear power supply with an oversized toroidal transformer delivers plenty of current for real-world speakers. The goal is simple: consistent, confident performance when your system gets demanding.
Built for Real-World Reliability
Quality parts, robust construction, and double-sided FR4 circuit boards with plated-through holes help optimize signal paths and long-term durability. The heavy steel chassis with a milled aluminum faceplate adds strength and a clean, classic look.
Easy System Integration
Connect to an AV processor, stereo preamp, or any AVR with preamp outputs using either balanced XLR inputs or unbalanced RCA inputs, one per channel. 12V trigger input and output make it easy to power on and off with the rest of a home theater system.
Transparent Protection
Microprocessor-controlled monitoring and protection are designed to be transparent during normal listening, while guarding against common fault conditions. Backed by a full 3-year warranty for peace of mind.

Specifications

Power: 140 W per channel; How much power it delivers to each speaker into its rated load.
Model code: EMOTIVA-BASX-A3-THREE-CHANNEL-AMPLIFIER; Quote it when you ask a specialist.

CIRCUIT TOPOLOGY

CIRCUIT TOPOLOGY: The BasX A3+ is a three channel power amplifier. The BasX A3+ 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.

POWER OUTPUT

Power Output (ALL channels driven): 140 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms 200 watts RMS per channel; 1 kHz; THD < 1%; into 4 Ohms
Power Output (two channels driven): 150 watts RMS per channel; into 8 Ohms250 watts RMS per channel; into 4 Ohms

PERFORMANCE SPECIFICATIONS

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): > 112 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): 1.25
Gain: 29 dB• Input Impedance: 27 kOhms

INPUT AND OUTPUT CONNECTIONS

Input Connections: Unbalanced (RCA); one each per channel Balanced (XLR); 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 REQ & PROTECTION

Power Requirements: 115 VAC or 230 VAC @ 50 / 60 Hz (automatically detected)
Protection: The BasX A3+ is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.

CONTROLS & INDICATORS

Standby: push button
Status LEDs: one per channel; blue
Standby LED: amber
AC Power switch: rocker switch (switches AC main power)
Status LEDs switch: disables front panel Status LEDs

WEIGHT & DIMENSIONS

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: 25 lbs (unboxed)31 lbs (boxed)