The Mark Levinson № 632 combines distinctive Tectonic industrial design with sophisticated amplifier engineering, creating a striking centrepiece for a high-performance audio system. Its aluminium and steel chassis is finished in black anodisation with a silver plinth, while a cascading glass centre panel and signature red accent lighting create a distinctive visual identity. The modular chassis architecture also isolates critical low-level analogue circuitry from the power supply, with selected components mounted on rubber supports for enhanced mechanical stability.

The № 632 employs Mark Levinson's Pure Path design philosophy, incorporating a fully differential and fully discrete signal path for highly accurate music reproduction. Balanced and single-ended analogue inputs provide flexible system integration, while the dual-monaural architecture helps maintain channel separation and precision. The amplifier is designed to produce a deep, expansive soundstage with highly accurate image placement, while requiring very little feedback to achieve exceptionally low distortion and extremely wide bandwidth.

Class A/AB operation and unusually high bias current enable the № 632 to deliver excellent linearity and a fast, agile response. The amplifier is designed to minimise the effects of parasitic capacitance, allowing voltage to change rapidly and helping preserve fine musical detail and dynamic expression. Dual sets of Hurricane binding post speaker terminals provide secure connection options, while the dual-monaural design delivers effortless dynamics and impressive control across a wide range of loudspeakers and listening levels.

A centrally positioned and structurally isolated custom toroidal transformer provides the foundation for the № 632's ultra-low-noise linear power supply. This design allows the amplifier to deliver substantial power to the loudspeakers while helping maintain the clean, open and smooth presentation associated with Mark Levinson amplification. Generous ventilation surrounds the glass Core element on the top panel, working with custom heatsink side panels to improve thermal efficiency. Mark Levinson's vibration-damping, mechanically isolated feet provide further decoupling, while the amplifier is designed and engineered in the USA.