Mark Levinson №526 Dual-Monaural Preamplifier innards

Mark Levinson‬ №526 Dual-Monaural Preamplifier with DAC features discrete, balanced R-2R ladder volume controls for impeccably low noise and precision channel-to-channel tracking.

In the №53 Reference Monaural Amplifier (second photo) Mark Levinson invented and patented Interleaved Power Technology (IPT), effectively eliminating switching noise in an amplifier that dramatically reduces power consumption and heat dissipation.