Description
Overview
The BasX A2+ is a two-channel power amplifier that delivers 160 watts per channel into 8 ohms and 250 watts per channel into 4 ohms, all channels driven, with a rated THD+N of less than 0.02% and an A-weighted signal-to-noise ratio of 112 dB. The A2+ features a robust linear power supply built around an oversized toroidal transformer, a refined Class A/B output stage, transparent fault protection, and both trigger input and output for flexible system integration.
New to the A2+ are balanced XLR inputs in addition to the unbalanced RCA inputs for each channel, giving it even broader compatibility with a wide range of stereo preamps, processors, and receivers with preamp outputs. The heavy-duty five-way binding posts accept banana plugs, spade lugs, or bare wire for solid speaker connections. Together, these features allow the BasX A2+ to deliver clean, dynamic audiophile soundat a price that puts high-end performance within reach.
The BasX A2+ is the perfect solution anywhere two channels of reliable, great-sounding power are needed. It’s ideal for building a dedicated two-channel system with a stereo preamp or DAC, and a smart way to upgrade the front channels of a surround sound receiver or a stereo receiver with preamp outputs. It’s also well-suited for powering a second zone with true hi-fi clarity.
Whether you’re a newcomer stepping into high-performance audio or a seasoned listener building out your system, the A2+ brings serious value, versatility, and sound quality to any setup.
Flexible Input and Output Connections
The BasX A2+ can easily be connected to a wide variety of audio signal sources, including stereo preamps, surround sound processors, and the preamp outputs offered by many receivers. Individual inputs are provided for each channel, with balanced inputs via high quality XLR connectors, and unbalanced inputs via industry standard RCA connectors.
Speaker connections feature heavy duty insulated five-way speaker binding posts which accept a wide range of speaker cables with banana plugs, spade lugs, or bare wires. A Trigger Input allows the amp to be remotely controlled by a standard trigger output signal from your preamp or receiver.
Audiophile Sound Quality at an Affordable Price
Circuit Topology
The BasX A2+ is a two-channel
power amplifier that 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 affordable price.
Audio Specifications
• Power Output (BOTH channels driven):
160 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms.
250 watts RMS per channel; 1 kHz; THD < 1%; into 4 Ohms.
• Gain: 29 dB.
• Power Bandwidth (at rated power; 4 Ohm – 8 Ohm
load):
20 Hz to 20 kHz (+ / – 0.07 dB).
• Broad Band Frequency Response:
5 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).
> 95 dB; ref 1 watt; (A-weighted.
• Minimum Recommended Load Impedance (per
channel):
4 Ohms (equals one 4 Ohm speaker or two paralleled 8 Ohm speakers).
• Damping Factor:
(8 Ohm load): > 500.
• 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:
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
Environmental
Dimensions:
17” wide x 4-1/4” high x 15-1/2” deep (unboxed; including feet).
17” wide x 3-1/2” high x 15-1/2” deep (unboxed; without feet).
Weight:
25.2 pounds (unboxed).
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