Mark Levinson N433 User Manual

Nº433

TRIPLE-MONO POWER AMPLIFIER

Nº433

TRIPLE-MONO POWER AMPLIFIER

A Mark Levinson Amplifier for the
Multi-Channel Age

The Nº433, Mark Levinson’s first three-

channel, single-chassis power amplifier, is a

significant milestone. It combines multi-

channel flexibility with the legendary quality

and performance of our traditional single- and

º

dual-monaural designs. The N

recognition that today’s home entertainment

enthusiasts have a plethora of choices avail-

able to them, that a growing number of these

choices use multi-channel sound to express

artistic vision, and that today’s audiences

deserve no less than the most truthful aural

º

windows possible. The N

demanding role.

433 is ideal for this

433 is our

Flexibility and Quality

Fitting three separate amplifiers in an enclo-

sure normally devoted to one or two

presented significant challenges, including

potential interference and heat dissipation

issues far beyond those encountered in

single- and dual-mono amplifiers.

In addition, power amplifiers are core compo-

nents of any high performance entertainment

system. Power amplifiers play an inherently

difficult role as they need to be authoritative

enough to drive a wide variety of demanding

speakers, yet transparent in order to preserve

sonic neutrality.

A Multi-Channel Standard

The Power of Three

A three-channel amplifier is inherently flexi-

ble. It lets you power all front speakers (Left,

Center, and Right) with identical circuitry

and use your existing amplifier for the

surround channels. Are you adding multi-

channel capability to an already-exceptional

º

stereo music system? The N

provide power for a Center and two

Surround speakers.

433 can

The Nº433 is no exception to the demanding

standards that Mark Levinson amplifiers have

defined for more than three decades. Rated

at 200 watts per channel into 8 Ohms and

400 watts per channel into 4 Ohms, the

º

433 is convection cooled and utilizes

N

exposed internal heat sinks for each channel.

With basic design directly traceable to our

N

º

432 and Nº431 dual-monaural power

amplifiers, the N

º

433 boasts three massive

and totally independent linear power

supplies, each consisting of a low-noise

temperatures and humidity. Here, the

®

advanced material Arlon

provides a physical-

toroidal power transformer and a bank of

low-loss capacitors to insure copious energy

storage. Control of this power reserve is the

task of the power amplifier’s voltage gain and

output stage circuitry, an area in which Mark

Levinson amplifiers have always excelled.

Balanced circuitry, another facet of our

design expertise, is readily apparent in the

º

433. However, rather than take the less

N

costly route of simply duplicating circuitry for

both halves of the balanced input signal, our

approach features an elegant new topology

for greater efficiency, higher performance,

and total sonic neutrality.

ly inert and sonically neutral base.

For the output sections, we’ve chosen bipolar

transistors with the best performance charac-

teristics and mounted them directly on the

exposed internal black-anodized aluminum

heat sinks for maximum heat dissipation.

In Summary

With its flexible triple-monaural design and

unique combination of brute force and

º

finesse, the N

400 series of amplifiers.

Accuracy. Reliability. Flexibility. The N

places Mark Levinson firmly in the multi-

433 perfectly augments the

º

433

The Levinson Difference

All Mark Levinson power amplifiers benefit

from extraordinary attention to circuit layout,

signal routing, and connector placement.

Engineers intimately familiar with each

circuit’s operation design circuit boards indi-

vidually, a practice that stands in sharp

contrast to the generic computer-generated

layouts used by many other compa-

nies. It is human insight and

disciplined intuition that

º

distinguishes the N

and all 400-series amplifiers

– and allows it to outperform

its predecessors.

Another factor in Mark Levinson excel-

433 –

channel world.

lence is the array of the ultra-high

performance parts that populate our balanced

circuits. Even the circuit board itself is of

prime importance as it allows these parts to

perform ideally under a wide range of

Nº433 interior.

Nº433 Triple-Mono Power Amplifier

Rated power output: 200 W/ch rms power @ 8 Ω

Frequency response: within 0.2 dB from 20 Hz to 20 kHz
Signal-to-noise ratio: better than –80 dB (ref. 2.83 V)

Voltage gain: 26.8 dB
Input impedance: 100 kΩ (balanced)

Input sensitivity 2.83 V output: 130 mV

Power consumption: 200 W in on, 100 W in standby, 10 W in sleep
Mains voltage: Determined by the needs of the country for which the unit was manufactured;

Connector complement: (6) custom binding posts

Output impedance: less than 0.05 Ω from 20-20,000 Hz
Overall dimensions: width: 17.75" (45.1 cm)

Shipping weight: 130.5 lb (59.2 kg)
Net weight: 114.5 lb (51.9 kg)

400 W/ch rms power @ 4 Ω

all above power ratings from 20 Hz–20 kHz at <0.5% THD
(assuming that the AC mains can deliver adequate current, without its own voltage sagging)

50 kΩ (unbalanced)

Full output: 1.82 V

cannot be reset by dealer or user

(3) 3-pin XLR balanced input connectors
(3) RCA input connectors
(2) 1/8-inch mini-jacks for remote turn-on
(1) RS-232 port on RJ-11
(2) Mark Levinson communications ports on RJ-11, RJ-45
(1) IEC-standard AC receptacle

height: 7.65" (19.4 cm)
depth 19.83" (50.4 cm)

Specifications are subject to change without notice.

Nº433 capacitors

º433

N

channel assembly

©2005 Harman International Industries, Incorporated.

"Mark Levinson" is a registered trademark of Harman

national Industries, Incorporated. All rights r

Inter

Not responsible for typographic errors.

Part # 072-17293

eser

ved.

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ord, MA 01730-1413 USA

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