In comparison to the Class D amplifier, ClassHD® is a switching amplifier and power supply technology which uses tracking to achieve the benefits of improved SNR, lower distortion, reduced EMI, reduced idle power consumption and higher efficiency. Unlike a regular Class D amplifier, the ClassHD® amplifier’s supply rails are maintained at a level just high enough to produce the voltage swing needed by the music at any point in time.

ClassHD® is best suited for applications which have:
  • Stringent space constraints for amplifier electronics
  • Concern with total heat dissipation
  • Concern with electromagnetic interference
  • Total system power above 300W
  • Superb SNR and THD+N performance
  • High power efficiency requirements
  • Impedance headroom
  • 0.5 Watt standby requirement


Available ASIMs:
    The HD250 2.2.1 amplifier system consists of Audera patented ClassHD® switching 4 x 30W + 1 x120W amplifier with tracking switch–mode power supply. This is a great fit for the high quality home theatre systems or computer multimedia systems. It has high system efficiency at light or heavy loads, resulting in smaller overall system size as compared to Class D. It can deliver total 240W RMS output power. With standby power of less than 0.5W it meets Energy Star and EU requirements. Has onboard auxiliary power supply for powering DSP, op-amps, etc. of the external feature board.



    The HD800 0.1 amplifier system consists of Audera patented ClassHD® switching 650W RMS at 1% THD subwoofer amplifier with tracking switch–mode power supply. This is a great fit for the subwoofer in high quality home theatre systems. It has high system efficiency at light or heavy loads, resulting in smaller overall system size as compared to Class D. With standby power of less than 0.5W it meets Energy Star and EU requirements. Has onboard auxiliary power supply for powering DSP, op-amps, etc. of the external feature board.

    The HD400 0.1 amplifier system consists of Audera patented ClassHD® switching 400W RMS subwoofer amplifier with tracking switch–mode power supply. This is a great fit for the subwoofer in high quality home theatre systems. It has high system efficiency at light or heavy loads, resulting in smaller overall system size as compared to Class D. With standby power of less than 0.5W it meets Energy Star and EU requirements. Has onboard auxiliary power supply for powering DSP, op–amps, etc. of the external feature board.

    The combination of P2X and ClassHD® delivers a no-compromise, low–cost solution for any battery powered portable or semi-portable audio system and truly wireless speakers. It features SKAA wireless receiver. Patented energy storage and smoothing circuitry extends battery life of the wireless audio system without compromising high power capability. It has 2 x 10W (or 1 x 20W) RMS capability (25ms into 2R resistive load) and low idle power consumption. Onboard compressor automatically adjusts gain to control output clipping during overdrive events.

    The combination of P2X and ClassHD® delivers a no-compromise, low-cost solution for any battery powered portable or semi–portable audio system and truly wireless speakers. By incorporating apt-X© coding technology into P2x ultra efficient amplifier technology, Audera can offer Bluetooth Stereo products with audio quality indistinguishable from wired with an impressive dynamic range of 92dB (at 16bit/44.1kHz). Patented energy storage and smoothing circuitry extends battery life of the wireless audio system without compromising high power capability. It has 2 x 10W (or 1 x 20W) RMS capability (25ms into 2R resistive load) and low idle power consumption of 180mW. Onboard compressor automatically adjusts gain to control output clipping during overdrive events. Has Bluetooth 2.0 support.

    The combination of P2X and ClassHD® delivers a no–compromise, low–cost solution for any battery powered portable or semi-portable audio system and truly wireless speakers. It enables large dynamic power and long battery life. P2X20 has 2 x 10W (or 1 x 20W) RMS capability (25ms into 2R resistive load ) and low idle power of 130mW. Onboard compressor automatically adjusts gain to control output clipping during overdrive events. It has I2S input to work with external wireless or DSP board.