Dual Monaural Power Amplifiers Operating Manual N 333 N 332 N 331

Operating Voltage, Nº333

Your Mark Levinson Dual Monaural Power Amplifier is characterized by its re-

markable ability to pass a musical signal with utter integrity, regardless of how

demanding that signal and the loudspeakers used might be. When called upon to

do so, your amplifier is capable of generating truly prodigious power levels into

virtually any speaker load, on either an instantaneous or a continuous basis.

Depending on the demands placed on the amplifier by your loudspeaker and

your listening habits, it is possible (although unlikely) for the capabilities of your

electrical service to become the limiting factor in the performance of your sys-

tem. As a result, the Nº 333 has been designed to be capable of taking advantage

of dedicated high current AC mains supplies which cannot limit its performance.

For compatibility with existing household outlets, a standard three prong, 15 am-

pere plug is provided on the captive, high current AC mains cable. If you decide

to use a dedicated, higher-current (30 ampere) line for your Nº 333, the only

thing that needs to be changed is the AC plug itself.

Important: When it comes to high current AC wiring such as the Nº 333 is

capable of using, building regulations and electrical codes

vary from region to region, and even from one municipality to

the next. For this reason, it is impossible for us to anticipate the

requirements of your area with regard to high current AC

hookups. If you plan to install a dedicated, high current AC

line for your Nº 333, please review this section carefully and

then contact a local electrical contractor for advice.

The Mark Levinson Nº 333 amplifiers may be factory-set for 100V, 120V, 200V,

210V, 220V, 230V or 240V AC mains operation at either 50 or 60Hz, based on the

country for which they are manufactured. Depending on local electrical codes

and regulations, the plug on the supplied AC input module may need to be re-

placed by a local, licensed electrical contractor. The maximum current require-

ments (in amperes) at these various voltages under various test conditions are

listed in the table shown below. (Note that only 230V units are sold in the Euro-

pean Union countries, per CE requirements.)

Nº 333 AC mains maximum

current requirements

100V 120V 200V 210V 220V 230V 240V

Off .1 .09 .05 .047 .045 .043 .042

Standby 2.04 1.70 1.02 .971 .927 .887 .850

On, at idle 3.49 2.91 1.75 1.66 1.59 1.52 1.46

300w @ 8Ω* 18.48 15.4 9.24 8.80 8.40 8.03 7.70

600w @ 4Ω* 31.9 26.6 15.9 15.2 14.5 13.9 13.3

1200w @ 2Ω* 54.2 45.2 27.1 25.9 24.7 23.6 22.6

* power ratings are continuous (rms) with less than 0.5% THD, from 20-20,000 Hz.

It is important to understand that these are worst-case requirements under severe

test conditions, which are extremely unlikely to be encountered in normal use.