Mark LevinsonNo. 51usedMark Levinson No. 51 Media PlayerThe Nº51 Media Player combines a DVD-Video processor that provides extremely high-quality picture and sound for the ultimate in movie cinema reproduction, and a CD processor, capable of music play...6500.00

Mark Levinson No. 51 Media Player

Listing ID: LIS4FHEB Classified 
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5/10
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Ships fromBristol, 06010
Ships toUnited States
Package dimensions17.0" × 27.0" × 27.0" (48.0 lbs.)
Shipping carrierunspecified
Shipping costSpecified after purchase
Original accessoriesRemote Control, Box, Manual
AverageResearch Pricing

The Nº51 Media Player combines a DVD-Video processor that provides extremely high-quality picture and sound
for the ultimate in movie cinema reproduction, and a CD processor, capable of music playback that exceeds that of high-end standalone CD players.

In addition to the standard analog video outputs, the Nº51 includes a High-Definition Multimedia Interface (HDMI) output for use with digital display devices. By using the HDMI output with a high definition digital display, the video signal remains in the digital domain from the source (disc) to the destination (display), unlike an analog system, where digital video signals are converted to analog and back to digital in the display, introducing unnecessary conversions and possible degradation of the picture. The Nº51 Media Player also features a separate monitor output for use with a media processor.

The Nº51 employs a Direct Digital Synthesis circuit incorporating a very high frequency reference clock. All data and clock signals carrying the digital audio information to the DACs are sent via a balanced Low Voltage Differential Signaling transmission line. This transmission scheme was first utilized in the Nº40 Media Processor and Nº390S CD Processor. The Nº51 also has the ability to output 44.1, 48, 88.2, or 96kHz signals from the S/PDIF, AES or EIAJ outputs using a dedicated sample rate converter.

Digital-to-analog conversion in the Nº51 is implemented using balanced multi-bit Sigma/Delta DACs delivering superb technical performance. In addition to the multi-bit architecture, these DACs have a differential current output, which allows optimization of the critical current-to-voltage conversion stage with dedicated operational amplifiers, possessing superlative rise time and bandwidth characteristics. Each channel incorporates two DACs in a dual mono mode configuration. Following this, a custom active filter circuit sums both halves of the balanced signal and provides excellent common mode noise rejection in addition to outstanding audio characteristics. This approach to the digital-to-analog circuit topology yields extraordinarily low distortion, improved signal-to noise ratio and superb, musical sound quality.

Following the active filters, the signal passes through the volume control. The Nº51 volume control is built around a dual MDAC 12-bit ladder attenuator, derived from the Nº40. Volume controls are a critical part of any audio product, and multi-channel audio is particularly demanding. Offsets in volume level between channels can be large, yet always need to be maintained in a precise relationship over the entire control range. The Nº51 volume control uses a hybrid analog/digital attenuation scheme to achieve a remarkable 80dB control range at 0.1dB resolution from 20 to 80 dB and 1dB resolution from 0 to 20dB. By applying DSP-based digital attenuation only to fill in the gaps for the very lowest level volume control steps, the Nº51 does not suffer the loss of resolution associated with pure digital volume controls.

For music reproduction, the Nº51 offers separate, fully balanced front left and right outputs in addition to 5.1-channel outputs. Additional attention was given to these channels resulting in a design which maintains fully balanced signals from the digital-to analog conversion stage to the output.

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