18
Specifications
The correlation between published specifications and sonic quality is
unreliable. A list of numbers reveals virtually nothing. All technical
measurements must be subject to qualitative as well as quantitative
interpretation.
Measurements of the Nº30 yield excellent results by any standards.
However, only those specifications that apply to its actual operation
are included here.
■
Frequency response:
10Hz - 20kHz +0dB, –0.2dB
■
Total harmonic distortion (THD):
0.003% @ 1 kHz, 0dB, A-weighted
■
Dynamic range:
98dB (or better)
■
Signal-to-noise ratio:
105dB
■
Channel separation:
Better than 110 dB
■
Intermodulation distortion (SMPTE IMD):
Less than 0.005%
■
Digital-to-analog conversion:
Two custom 20-bit DACs
■
Digital filter:
8x oversampling
■
Analog filter:
Bessel-tuned, linear phase to 40kHz
■
Low-level linearity:
Deviation unmeasurable to below –70dB,
approxi1.7dB below –90dB
(undithered, referenced to 0dB @ 1kHz)
■
Output impedance:
Less than 6
Ω
■
Mains voltage:
100V, 120V, 200V, 220V, 240V
■
Mains frequency:
50/60 Hz
■
Overall dimensions:
See "Dimensions"
■
Shipping weight (2 boxes):
89 lbs. (40.37kg)
■
Connector complement, Nº30:
2 female RCA-type connectors
5 XLR-type female connectors
6 XLR-type male connectors
3 EIAJ-type connectors
1 ST-type connector
2 five-pin female DC connectors
1 two-pin female DC connector
■
Connector complement, PLS-330: 2 five-pin female DC connectors
1 two-pin female DC connector
1 IEC mains connector
The compact disc standard, as created by Sony and Philips, allows a
high-frequency boost to be employed during recording. This boost,
called recording pre-emphasis, increases the signal-to-noise ratio at
high frequencies, but must be countered by a high-frequency cut
before playback to restore a recording's normal frequency response.
De-emphasis may be done as the recording is being mastered, or the
compact disc (or digital audio tape) may be made with the pre-
emphasis still on, and the de-emphasis performed in the playback unit.
In the Nº30, the de-emphasis filtering is done in the digital domain.
About de-emphasis…
If purchased in North America, this Mark Levinson product’s warranty is owner-transferable.
Warranty conditions are valid only in the country where the product was originally purchased.
For warranty information and conditions on products purchased outside of North America,
contact your local dealer or regional distributor.