Benchmark AHB2 Power Amplifier Firmware Kits the DAC3 uses distributed power

the DAC3 uses distributed power supply regulation

All of these headphones can be cleanly driven to very loud levels with the HPA4 headphone amplifier and this provides a safer solution than the AHB2

The wasted power produces heat which must be dissipated into the listening space

The Importance of the First Watt

Benchmark AHB2 Power Amplifier Firmware Kits the DAC3 uses distributed powerThe AHB2 is currently shipping from stock. The AHB2 is a radically different audio amplifier. Its patented design delivers performance that approaches the limits of the latest high resolution audio formats. Benchmark's AHB2 power amplifier delivers musical details without introducing the masking effects of amplifier noise and distortion. The dynamic range of the AHB2 is 132 dB, making it 10 to 30 dB quieter than some of the very best reference quality