The BasX A11 is an eleven-channel power amplifier that delivers 105 watts / channel into 8 Ohms and 140 watts / channel into 4 Ohms, all channels driven, with a rated THD+N of < 0.1%, and an A-weighted S/N ratio of <115 dB. The BasX A11 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 A11 to be used with almost any preamp or processor. Audiophile grade five-way speaker terminals accept banana plugs, spade lugs, or bare wires. These features combined allow the BasX A11 to deliver true audiophile performance and sound-quality at an amazingly affordable price.

The BasX A11 is a great choice if you're looking for a high-quality power amp to pair with a pre/pro, like our MC1 to power all the speakers in a 7.1.4 channel system. Because the A11 provides so many channels of amplification in a single chassis, it also allows some other interesting connectivity options, such as powering the channels in a formidable 7.1 system with bi-amped main LCR speakers!

Circuit Topology

• The BasX A11 is an eleven-channel power amplifier. The BasX A11 combines classical audiophile amplifier architecture, based on a heavy-duty Class H 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 and high efficiency at a truly reasonable price

Audio Specifications

• Power Output (ALL channels driven): 105 watts RMS per channel; 20 Hz – 20 kHz; THD < 0.1%; into 8 Ohms. 140 watts RMS per channel; 1 kHz; THD < 1%; into 4 Ohms.
• Power Output (two channels driven): 160 watts RMS per channel; into 8 Ohms. 260 watts RMS per channel; into 4 Ohms.
• Power Output (5 channels driven): 145 watts RMS per channel; into 8 Ohms. 200 watts RMS per channel; into 4 Ohms.
• Power Output (7 channels driven): 125 watts RMS per channel; into 8 Ohms. 180 watts RMS per channel; 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: 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

• 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 A11 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.

Mechanical

• Dimensions: 17” wide x 7 3/4” high x 15-1/2” deep (not including connectors). 23” wide x 13” high x 21 1/2” deep (boxed).
• Weight: 51 lbs (unboxed) 57 lbs (boxed)

Downloads

Download Product Manual