Filter
Top Products
2
Mark Levinson
Introduction
Thank you for purchasing the Nº532 Dual Monaural Power
Amplifier. True to Mark Levinson® tradition, the audio excellence
and performance levels of the Nº532 are unsurpassed in today’s
marketplace.
Product Description
The Nº532 Dual Monaural Power Amplifier redefines the concept of
outstanding performance. Drawing together all of the best features
of past Mark Levinson amplifiers to create a new, streamlined design
with extensive isolation of signal path circuitry, exceptionally low
impedance levels from the AC supply to the loudspeaker outputs
and very minimal signal degradation, the final result is impressive
even for the Mark Levinson high standard of excellence.
The first non-reference Mark Levinson amplifier to be fully
differential, the Nº532 provides both RCA and XLR connectors that
accept and deliver a balanced signal directly to the input stage of
the amplifier, with no additional circuitry. Each phase of the
differential input has identical electrical properties. The input and
voltage gain stages are tightly matched to maximize the rejection of
common mode signals. Such noise is rejected at the input stage,
preventing the amplification of introduced noise through the entire
amplifier signal path. In addition, since the amplifier is differential
for both input and output, the input stage handles the balanced
signals in their “native” format, ensuring that no noise is intro-
duced through unnecessary signal conversions.
The Nº532 has two independent audio channels, isolated from each
other and from the control and power circuitry. This isolated
design results in two “piers”, each containing identical circuitry for
a single audio channel. The control and power circuitry resides in
the center of the amplifier, between the piers and thus isolated from
each audio channel. This unusual design provides a number of
advantages – additional heatsink capacity for thermal requirements,
virtually ideal balanced output characteristics, and the ability to
isolate potentially noisy power and control circuits from the signal
path of the audio channels.
The extremely low-noise toroidal power supply features an
interwinding screen between the transformer coils, filtering
mains-born noise from the secondary power supply. A separate,
dedicated power supply for the voltage gain stages provides double
isolation between the main audio supply and the higher current
that powers the rest of the amplifier, ensuring minimal noise
introduction. Physically, the power supplies are placed very close
together for the greatest benefit from magnetic field cancellation,
isolated, and placed as far away from the signal inputs as possible to
reduce noise introduction from high-current levels.