Total Harmonic Distortion
< 0.005%
Professional audio, microphones and system integration

The Harmonai X4S/X6S series is a standard 2U rack-mount Class D audio power amplifier, featuring a hybrid Class D + transformer architecture that delivers the warm, classic analog sound while maintaining high energy efficiency. Total harmonic distortion is below 0.005%, signal-to-noise ratio reaches up to 112dB, and frequency response spans 20Hz to 20kHz (±0.25dB), ensuring precise signal reproduction across the full audible spectrum. Equipped with multiple protection mechanisms—including thermal overload, short-circuit, DC offset, clipping, soft-start, and intelligent limiter—the amplifier provides reliable power for professional live events, theaters, conference rooms, fixed installations, and more.
< 0.005%
112dB (A-weighted)
20Hz – 20kHz ±0.25dB
> 1000
50V/μs
30kΩ balanced input
0.775V
< 5mV
210V–240V ±10%, 50Hz
COSΦ < 0.95 @ >50A PEAK
100V PEAK / 50A PEAK
Thermal overload, short-circuit, DC offset, clipping, soft-start, zero-current switching output relay, intelligent limiter
Suitable for professional sound systems, theater and venue reinforcement, conference rooms and multi-function halls, fixed-installation projects, and studio monitor amplification. Its standard 2U rack-mount form factor enables seamless integration into industry-standard equipment racks.
For more information about Harmonai professional audio products or to request a customized solution, please contact our technical team.