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XA500 is a four-channel class AB power amplifier elaborately designed for the commercial applications. It uses custom designed side mount heatsinks. Without the internal fan, XA500 works very quietly and is always dust-free, making the device maintenance-free.

The XA500 power amplifier has 4 independent channels. Every two channels can be bridged to double the output power. Or two channels bridged to drive the bass, together with the other two stereo channels to drive the satellite speakers, so to make a 2.1 sound system.  



Key Features

Custom designed side mount heatsinks, four discrete class AB amplifiers in a one unit 19" enclosure.

Switchable high and low pass filters for easy and trouble free subwoofer/satellite applications.

Integrated APC limiter circuitry and clip indication. This intelligent circuit will prevent harsh distortion caused by clipping, provided that the input signal itself is not distorted of course….. what goes in, comes out.

Bridgeable power amplifiers: double the output power by uniting the power of 2 amplifiers. Minimum load impedance in bridge mode is 8 ohms.

Self-supporting low resonance frame. Torsion free front and side panel construction with integrated heatsink assembly.

Solid aluminum brushed front panel with removable 19" brackets and handles for use in a rack, no additional support needed. Without the 19" brackets it will be a standalone unit in high quality audio systems.

High power toroidal transformer.

Low impedance power supply for improved dynamic response.

Solid speaker binding posts.

4 sets of banana screw plugs included.


parameter table

Rated Power 4x 75W (8Ω stereo)
4x 125W (4Ω stereo)
2x 250W (8Ω bridge)
Total harmonic distortion(8Ω & 20Hz-20kHz,half power) ≤ 0.1%
Slew rate ≥ 25 V/uS
Frequency response(1W 8Ω stereo) 100 Hz-20kHz ± 0.5dB (with built-in 30Hz low cut)
Sensitivity 1.0V

C&D  100Hz-3dB(High Pass)

A&B  100Hz-3dB(Low Pass)

A-D  30Hz-3dB(Low Cut)

Damping(1kHz &8Ω) ≥ 200
Signal-to-noise ratio (A-weighted, rated power 8Ω) ≥ 100dB
Crosstalk (1kHz, rated power 8Ω)  ≥ 60 dB
Input impedance: Unbalanced 10kΩ balanced 20kΩ
Output circuitry Class AB
Protection DC protection/short circuit protection/overheat protection/
 output overload protection/soft start protection
Dimension(WxHxD) 483 x44x320mm
Net weight 7.0Kg