Nº532

Highlights

  • Compartmentalized chassis protects the delicate audio circuits from interference and noise
  • ML Net and Link2 functionality allow for communication between two or more similiarly equipped Mark Levinson components
  • Extremely low-noise toroidal power transformers filter mains-born noise from the secondary power supply
  • Two balanced XLR inputs
  • Electrically-identical signal paths for both audio channels minimize nonlinearity
  • Two unbalanced RCA inputs

Awards & Accolades

  • 2009

    “Gold Award in the Analog Grand Prix”

    Analog Magazine (Japan)

  • 2009

    “Best Buy Component” Award

    Stereo Sound (Japan)

  • 2008

    CES Report "Mark Levinson Amp Brings Back Traditional Styling" by Larry Greenhill

    Stereophile

Nº532

"The Nº 532’s meticulous craftsmanship is evident in the uniquely engineered design. To create the optimum power delivery system, the chassis of the Nº 532 is specially designed to isolate the audio circuits from interference and noise. When viewed from above, the rear portion of the power amplifier has three distinct piers. Control and power circuitry reside in the center pier, separate from the audio circuitry, which resides in the two outer piers – one dedicated to each channel. The power transformers are located at the front of the chassis, away from the audio circuits. This unusual design provides a number of important advantages – isolation of the potentially noisy power and control circuits from the delicate audio circuits, additional heat sink surface area for cooling, and very short signal and power delivery paths.
Additionally, special care was taken in the design and implementation of the voltage regulator circuitry. Multiple stages of regulator circuits are employed, using a combination of series and shunt elements, custom-tailored to the audio circuitry for which they provide power. These discrete, low-noise, wide-bandwidth circuits are in close proximity to the audio signal path they power, but placed on a separate circuit board to minimize interaction with the audio signals and prevent corruption of low-level signals. The result is higher resolution, better bass definition, greater focus and more precise dynamic control. Similarly extraordinary measures were taken with the design of the toroidal power transformers, which filter mains-born noise from the secondary power supply and help ensure any capacitance that normally exists between the windings is knocked down to prevent it from finding its way into the delicate audio circuits. The power supplies are placed very close together to maximize magnetic field cancellation, and as far away from the audio signal path as possible to further reduce the potential for interference.
The compact design of the Nº 532’s circuitry allows the signal path to be tighter and shorter, reducing parasitic capacitances and minimizing propagation delay and phase shift. The end result is a faster, wider bandwidth and a cleaner output signal with very low impedance level and minimal signal degradation. Lastly, the audio signal output path contains 24 output devices per channel, providing an impressive power capability while minimizing crossover distortion.
The first non-reference Mark Levinson amplifier to be fully differential, the Nº 532 provides both RCA and XLR connectors that accept balanced signals directly into the input stage of the amplifier with no additional circuitry. Also, it is the first Mark Levinson linear amplifier to incorporate through-hole parts specifically for critical signal-path components and surface-mount components for building smaller circuits with higher performance. With the recent evolution of semiconductors, it is now possible to build more compact circuits, and obtain better transient response with greater stability and enhance immunity from noise sources.
As music and cinema systems continue to grow more complex, integrating individual components takes on greater importance. To address the increasing demand for more control and communications capabilities, the Nº 532 features Mark Levinson’s proprietary ML Net and Link2 inter-device communication protocols, allowing the Nº 532 to be easily integrated and controlled by other Mark Levinson devices. The Nº 532 also provides a traditional 12V trigger input and output to synchronize on/standby status with other devices that do not include ML Net or Link2. An RS-232 port also allows the Nº 532 to be controlled by units from industry leaders such as AMX™, Crestron® and other third-party integrated control systems."


Frequency Response

within 0.1dB from 10Hz to 20kHz

Input Impedance

100 kΩ (balanced); 50 kΩ (unbalanced)

Input Sensitivity

2.83Vrms output at 130mVrms input

Height

(with feet): 9.55 in (242.57mm); (without feet): 8.75 in (225.25mm)

Width

17.5 in (444.50mm)

Depth

21.1 in (535.85mm)

Weight

Net weight: 121.5 lbs (55.22kg); Shipping weight: 129.5 lbs (58.86kg)

Communication and Control

two Link2 ports; one Ethernet port; one 3.5mm mono (tip/sleeve) mini plug trigger input, 3-12Vdc; one 3.5mm mono (tip/sleeve) mini plug trigger output, 3-12Vdc

Inputs

two balanced XLR inputs; two unbalanced RCA inputs

Rated Output Power into 8 ohms

400W/ch (20Hz to 20kHz at

Signal-to-Noise Ratio

>85dB, reference level: 2.83 Vrms

Power Requirements

100V∼, 120V∼, 230V∼, 800W, factory set for destination country

Speaker Connections

Two “Hurricane” loudspeaker outputs with banana-plug sockets (banana-plug socket not available on the 230 VAC models)