Mark Levinson 532 owner manual Introduction, Product Description

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
2	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.