Pre/Power Amplifiers

All inputs – digital or analogue – are processed at some point via an Analog Devices SHARC processor in the M-100 and M-150, programmed by Micromega to execute the volume and its 'MARS' room-correction regime. The base sample rate is 96kHz, so whether you feed the amplifier via its analogue XLRs or push in a 192kHz, 384kHz, etc, digital file via USB or S/PDIF, the final analogue response of the amplifier is limited to ~45kHz. Meanwhile, the 'Resonant Power Supply' (RPS) is an interesting twist on the more common switchmode PSU, used where efficiency or a compact form factor are key priorities. However, their fast switching transients (and conducted and radiated emissions) require EMC suppression filters and EMI reduction techniques in the core of the SMPS controller if 'audiophile' quality is to be maintained. The RPS switches at a lower ~100kHz and at near-zero voltage and current, minimising switching losses. Thus it delivers high efficiency – 95% is claimed here – while suffering minimal EMI. PM