Audiophiles often turn their noses up at Class D amplification, feeling the nature of its 'on/off' approach loses the sonic fidelity delivered by linear Class A or Class A/B designs (and often erroneously believing the 'D' stands for 'digital'). Yet Class D has many benefits, not least of which is its remarkable efficiency, and NAD believes its latest implementation – found in its M28 multichannel amp– is the cream of the crop.