Mark Levinson Nº 536 – Fully Discrete Monaural Power Amplifier

400 Watts. One Channel. Complete Authority.

The Mark Levinson Nº 536 is a reference-class monaural power amplifier designed to bring extraordinary control, dynamic capability, and musical detail to high-performance audio systems.

Delivering 400 watts into 8 ohms and 800 watts into 4 ohms, the Nº 536 combines substantial power with Mark Levinson's proprietary Pure Path circuit architecture. Its fully discrete, direct-coupled, balanced signal path is engineered to preserve the integrity of the musical signal from input to output.

Unlike a conventional stereo amplifier, each Nº 536 is dedicated to a single audio channel. Pair two amplifiers for a dual-mono stereo system with independent amplification and power supplies for the left and right loudspeakers.

With high-current Class AB output circuitry, Class A voltage-gain and driver stages, and a massive custom toroidal transformer, the Nº 536 is designed to drive demanding loudspeakers while preserving the subtle details that make music compelling.

Designed and handcrafted in the United States, it represents Mark Levinson's commitment to precision engineering and high-performance amplification.

 

Key Features

• 400 Watts into 8 Ohms: Substantial power for demanding high-end loudspeakers.

• 800 Watts into 4 Ohms: Doubles its rated output into a lower-impedance load.

• Stable into 2 Ohms: Engineered for challenging speaker impedances.

• True Monaural Design: One dedicated amplifier chassis for each audio channel.

• Pure Path Circuitry: Fully discrete, direct-coupled, balanced signal architecture.

• High-Bias Class AB Amplification: Operates in Class A during many typical listening conditions.

• Custom Toroidal Transformer: Shielded and encapsulated to reduce electrical and mechanical noise.

• High-Current Power Supply: Designed to support demanding musical transients.

• Balanced and Unbalanced Inputs: XLR and RCA connectivity.

• Hurricane Speaker Terminals: Two pairs of binding posts for standard or compatible bi-wired connections.

• Custom Integration: Ethernet, RS-232, USB, and 12V trigger connectivity.

• American Craftsmanship: Designed and handcrafted in the USA.

400 Watts of Power. 800 Watts of Control.

Some loudspeakers demand considerably more from an amplifier than their sensitivity rating might suggest.

The Nº 536 is engineered to meet those demands with 400 watts RMS into 8 ohms and 800 watts into 4 ohms. It is also specified as stable into 2-ohm loads.

Its ability to double rated power into 4 ohms reflects the substantial current-delivery capability of its amplifier and power-supply architecture.

For large floorstanding loudspeakers, complex crossover networks, and demanding musical recordings, this provides the electrical foundation for controlled bass, dynamic contrasts, and effortless reproduction.

From the subtle resonance of an acoustic guitar to the impact of a full orchestra, the Nº 536 is designed to maintain composure as musical demands increase.

 

True Monaural Architecture

The Nº 536 is not a stereo amplifier with two channels sharing a chassis.

It is a dedicated monaural amplifier, designed to power one loudspeaker channel.

Using two Nº 536 amplifiers creates a dual-mono stereo system in which each loudspeaker has its own amplifier chassis, power supply, and amplification circuitry.

This architecture separates the electrical demands of the left and right channels and provides considerable flexibility when positioning amplifiers near their respective loudspeakers.

For reference two-channel systems, monaural amplification offers a purpose-built approach to power delivery and channel independence.

Pure Path: The Foundation of Mark Levinson Sound

At the heart of the Nº 536 is Mark Levinson's proprietary Pure Path circuit design.

The amplifier employs a fully discrete, direct-coupled, balanced signal path, with individually selected components performing specific functions throughout the circuit.

Its design emphasizes high open-loop linearity, wide bandwidth, and minimal negative feedback.

By eliminating coupling capacitors from the audio signal path and operating the voltage-gain and driver stages in Class A, the Nº 536 is engineered to reproduce musical information with precision.

The goal is not simply impressive measurements. It is to preserve the dynamics, tonal relationships, and spatial details contained in the original recording.

 

Class A Refinement Meets Class AB Power

The Nº 536 combines Class A operation in its voltage-gain and driver stages with a high-bias Class AB output stage.

During many typical listening conditions, the output stage operates within its Class A region. As the music demands greater power, the amplifier transitions into Class AB operation.

This approach allows the Nº 536 to combine the operating characteristics of high-bias amplification with the output capability required for demanding loudspeakers.

The result is an amplifier designed to handle quiet passages and substantial dynamic peaks within the same carefully engineered architecture.

 

A Power Supply Built for Demanding Music

The Nº 536 incorporates a custom-designed, low-noise toroidal transformer with separate secondary windings for its output stages.

The transformer is shielded and encapsulated to help reduce electrical and mechanical noise.

Its high-current linear power supply uses high-speed Schottky rectifiers and multiple parallel filter capacitors to provide energy reserves for demanding musical passages.

This substantial power-supply architecture supports the amplifier's ability to deliver 400 watts into 8 ohms and 800 watts into 4 ohms.

Whether the recording calls for sustained output or sudden transient energy, the Nº 536 is engineered to provide the necessary current while maintaining its intended performance.

 

Balanced and Unbalanced Connectivity

The Nº 536 is designed to integrate with a wide range of reference preamplifiers.

Each amplifier includes one balanced XLR input and one unbalanced RCA input, providing flexibility when selecting compatible source and control components.

Two pairs of Mark Levinson Hurricane loudspeaker terminals support secure speaker-cable connections and compatible bi-wiring configurations.

Ethernet, RS-232, USB, and 12V trigger connections provide additional functionality for monitoring, configuration, and integration into professionally installed audio systems.

For installations where amplifiers are housed in equipment racks or integrated with a larger control system, these connections offer valuable flexibility.

Precision Construction. American Craftsmanship.

The Nº 536 is housed in a substantial chassis constructed from precision-machined 6000-series aluminum.

Its mechanical design reflects the familiar Mark Levinson aesthetic while providing a rigid enclosure for its high-current amplifier circuitry and power supply.

Designed and handcrafted in the United States, the Nº 536 reflects the company's emphasis on precision manufacturing and carefully executed audio engineering.

Weighing approximately 100 pounds per amplifier, it requires a properly rated equipment stand, adequate ventilation, and careful handling during installation.

Technical Specifications

Specifications are for one Nº 536 monaural amplifier.

Specifications sourced from Mark Levinson's official product documentation and owner's manual. The manufacturer's online page and owner's manual list slightly different chassis dimensions; the table uses the owner's manual figures.

Experience Mark Levinson at The Grid HiFi

The Mark Levinson Nº 536 is designed for listeners building a serious reference audio system.

At The Grid HiFi, we specialize in high-performance two-channel audio, premium loudspeaker systems, component matching, and professional installation.

Whether you're pairing two Nº 536 amplifiers with a Mark Levinson preamplifier, upgrading your existing amplification, or designing a dedicated listening room, our team can help you evaluate speaker compatibility, system configuration, and installation requirements.

Contact The Grid HiFi to inquire about the Mark Levinson Nº 536 and discuss your reference audio system.