MARK LEVINSON № 631 MONAURAL POWER AMPLIFIER

The flagship of the 600 Series, the Mark Levinson № 631 is a fully differential, fully discrete monaural amplifier designed to power one loudspeaker channel without compromise. Its Pure Path architecture, high-bias operation and substantial linear power supply deliver effortless dynamics, exceptional clarity and precise placement across a deep, expansive soundstage.

Using one № 631 for each channel provides complete separation between the left and right loudspeakers. Its vertically oriented chassis isolates the power supply from sensitive analogue circuitry, while mechanically decoupled feet and extensive thermal management create a stable foundation for consistent reference-level performance.

• Flagship monaural power amplifier
• One amplifier required per loudspeaker channel
• Fully differential and fully discrete construction
• Fully balanced Pure Path signal architecture
• Class A/AB operation
• Selectable high-bias mode
• Ultra-low-noise toroidal linear power supply
• Balanced XLR and single-ended RCA inputs
• Dual Hurricane loudspeaker binding posts
• Mechanically isolated internal architecture
• Tectonic design with signature red illumination
• Designed and engineered in the USA

Uncompromising single-channel amplification for systems demanding the highest levels of power, separation and musical precision.