The BasX A1 is a monoblock power amplifier that delivers 200 watts into 8 Ohms and 325 watts into 4 Ohms, with a rated THD+N of < 0.02%, and an A-weighted S/N ratio of 112 dB. The BasX A1 features a heavy-duty linear power supply, high-quality Class A/B amplification, transparent fault protection, and a trigger input and output. A high quality industry standard unbalanced RCA input enables the BasX A1 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 A1 to deliver true audiophile performance and sound quality at an amazingly affordable price.

In addition to the features it shares with our other BasX power amplifiers, as a true monoblock the BasX A1 also offers several other benefits that will be appreciated by dedicated audiophiles. Monoblocks offer the ultimate assurance that there will be no unwanted interaction between channels. The audio signal for each channel is handled by a separate amplifier, powered by its own heavy duty power supply, housed in its own separate chassis. This also gives you the option of minimizing the length of your speaker cables by locating each amplifier close to the speaker it powers.

Simply choose as many BasX A1 monoblocks as you need today… or use them for your most critical channels today and upgrade your other channels later. And, of course, a BasX A1 is also a great way to upgrade your center channel to match your main stereo pair.

Circuit Topology

• The BasX A1 is a monoblock (one channel) power amplifier. The BasX A1 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: 

• 200 watts RMS; 20 Hz – 20 kHz; THD < 0.05%; into 8 Ohms
• 325 watts RMS; 1 kHz; THD < 0.1%; into 4 Ohms

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; referenced to 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): 1.6 V

Gain: 29 dB

Input Impedance: 27 kOhms

Input And Output Connections

• Input Connection: Unbalanced (RCA)

• 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 LED: one; blue

• Status LED: changes to red to indicate a fault condition

• Standby LED: amber

Rear Panel Controls

• AC Power switch: rocker switch (switches AC main power)

• Status LED switch: disables front panel Status LED

Protection

• The BasX A1 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: 
• 22 lbs (unboxed)
• 30 lbs (boxed)

Downloads

 Download Product Manual