{"id":823915642922,"title":"NAD M51 Direct Digital DAC","handle":"nad-m51-direct-digital-dac","description":"\u003ch1 class=\"h1-products\"\u003eNAD M51 Direct Digital DAC\u003c\/h1\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eDigital Innovation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNAD's Direct Digital™ technology is unique in both its extreme precision and in its speed. This advancement was first introduced in the NAD M2 Direct Digital Amplifier to worldwide acclaim. Now this innovative Direct Digital™ technology is available as a standalone DAC. Instead of using the Direct Digital™ processor to drive a high power output stage, we employ a line level analogue output that will perfectly interface with any analogue system with the M51 Direct Digital DAC.\u003c\/p\u003e\n\u003cp\u003eHow Direct Digital™ Operates\u003c\/p\u003e\n\u003cp\u003eNAD's technology uses a very powerful processing engine that operates at much higher speed and with much greater accuracy than typical Digital-to-Analogue converters. Running at 108MHz, the M51 resamples the incoming pulse code modulated (PCM) signal and converts it to a pulse width modulation signal (PWM) with a sampling rate of 844kHz. Operating in a differential mode with double precision, the M51 has state-of-the-art specifications for low noise and freedom from distortion. The extreme headroom afforded by the 35-bit architecture allows for a DSP-based volume control that does not reduce resolution. Even with 24-bit high definition signals, the output can be attenuated by 66dB (very, very quiet) before bit truncation begins.\u003c\/p\u003e\n\u003cp\u003ePure Performance\u003c\/p\u003e\n\u003cp\u003eThe incredible precision of the M51's processing engine gives music a vibrancy and transient accuracy that must be heard to be appreciated. The conversion process from PCM to PWM completely eliminates any jitter present on the incoming signal; again, offering state-of-the-art performance in this most important parameter. Due to the very high clock speed and mathematical precision of our reconstruction filters, the resulting audio signal is totally free of digital artifacts like ringing. A Pure Class A analogue stage with very low output impedance provides the perfect interface to your favourite amplifier. Also, both balanced and single-ended outputs are available.\u003c\/p\u003e\n\u003cp\u003eNext Generation Connectivity\u003c\/p\u003e\n\u003cp\u003eWhile the M51 includes the industry standard SPDIF, AES\/EBU, Optical and Coaxial inputs, it also includes the latest USB technology called USB Audio Class 2. USB Audio Class 2 supports sample rates of 192kHz releasing the previous limitation of USB at 96kHz. A device USB port is included allowing direct connection of a PC or Mac.\u003c\/p\u003e\n\u003cp\u003eThe M51 offers two HDMI inputs and one output with video pass through. This opens up the possibility of using the M51 Direct Digital DAC as the heart of a \"Video 2.0\" system using the mandatory two-channel linear PCM soundtrack from Blu-ray or DVD to make a compelling two-channel high definition theatre presentation. Many symphony orchestras and some specialty music labels are also released in HD recordings on Blu-ray or DVD. The M51 is fully 3D video compatible but there is no surround sound decoding or video processing.\u003c\/p\u003e\n\u003cp\u003eMore than Just a DAC\u003c\/p\u003e\n\u003cp\u003eM51 is a fully functional digital preamp with seven digital inputs and one of the world's best volume controls. As a 'preamp' it is totally noise and distortion free because all switching and volume control is done in the digital domain. There are no analogue circuits except for the Class A buffer at the output of the DAC. While input selection is available from a front panel control, volume can only be selected via remote control. The supplied IR remote also features controls for NAD's matching M50 Digital Music Player. Serial control is available via RS-232 IR and 12V trigger inputs allow the M51 to fully integrate with advanced automation systems.\u003c\/p\u003e\n\u003cp\u003eThe M51 introduces many 'firsts' for the DAC product category: first to support HDMI, first to support USB Audio Class 2 with support for 192kHz, the first to use digital error correction, and the first 35-bit architecture to be found in a DAC.\u003c\/p\u003e\n\u003cp\u003eWhether you want to get into computer audio, 'Home Cinema 2.0' or just want to upgrade your CD player, the M51 Direct Digital DAC will get the best possible performance from every digital format. All this innovation, performance and flexibility come with NAD's legendary sound quality and affordability.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eSpecifications\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eRated Distortion (THD+N with AES 17 filter)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026lt;0.0005% (0dBFS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIMD Distortion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e0.0001%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSignal\/Noise Ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eChannel Separation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026gt;-115dB (ref. 0dBFS Volume -1dB)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSample Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e32kHz to 192kHz (USB and digital S\/PDIF)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eFrequency Response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e±0.5dB (ref. 20Hz - 22kHz sample rate)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eOutput Level\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e2V (ref. input 0dBFS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eINPUT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eXLR - AES\/EBU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSPDIF\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003eCoaxial x 1\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eOptical x 1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eHDMI x 2 (stereo only)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eUSB Class 2 Audio: asynchronous 24\/192 support \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIR In\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eTrigger In\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e12V ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eOUTPUT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eHDMI Video Out (3D video pass through)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eAnalogue\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003eUnbalanced: 47 ohms\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eBalanced: 120 ohms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eTrigger Out\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e12V ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eGENERAL\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eAC Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e100-240V AC ~ 50\/60Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eStandby Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026lt;0.5W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIdle Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e16W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eUnit Dimension (WxHxD) - Gross\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003e435 x 78 x 296mm\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003e17 1\/8 x 3 1\/8 x 11 11\/16 inches\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eNet Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e5.8kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eShipping Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e9.8kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eFinish\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eMasters Silver or Black\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","published_at":"2018-04-05T15:45:59+02:00","created_at":"2018-01-22T20:17:51+02:00","vendor":"NAD","type":"DAC","tags":["DACs","HiFi Separates","NAD"],"price":3409500,"price_min":3409500,"price_max":3409500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":10131475365930,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"nad-m51","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"NAD M51 Direct Digital DAC","public_title":null,"options":["Default Title"],"price":3409500,"weight":0,"compare_at_price":null,"inventory_quantity":5,"inventory_management":null,"inventory_policy":"deny","barcode":""}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/2577\/1494\/products\/1b9a4d763bb43070f48a07b058e1cef5.jpg?v=1516645071"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/2577\/1494\/products\/1b9a4d763bb43070f48a07b058e1cef5.jpg?v=1516645071","options":["Title"],"content":"\u003ch1 class=\"h1-products\"\u003eNAD M51 Direct Digital DAC\u003c\/h1\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eDigital Innovation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNAD's Direct Digital™ technology is unique in both its extreme precision and in its speed. This advancement was first introduced in the NAD M2 Direct Digital Amplifier to worldwide acclaim. Now this innovative Direct Digital™ technology is available as a standalone DAC. Instead of using the Direct Digital™ processor to drive a high power output stage, we employ a line level analogue output that will perfectly interface with any analogue system with the M51 Direct Digital DAC.\u003c\/p\u003e\n\u003cp\u003eHow Direct Digital™ Operates\u003c\/p\u003e\n\u003cp\u003eNAD's technology uses a very powerful processing engine that operates at much higher speed and with much greater accuracy than typical Digital-to-Analogue converters. Running at 108MHz, the M51 resamples the incoming pulse code modulated (PCM) signal and converts it to a pulse width modulation signal (PWM) with a sampling rate of 844kHz. Operating in a differential mode with double precision, the M51 has state-of-the-art specifications for low noise and freedom from distortion. The extreme headroom afforded by the 35-bit architecture allows for a DSP-based volume control that does not reduce resolution. Even with 24-bit high definition signals, the output can be attenuated by 66dB (very, very quiet) before bit truncation begins.\u003c\/p\u003e\n\u003cp\u003ePure Performance\u003c\/p\u003e\n\u003cp\u003eThe incredible precision of the M51's processing engine gives music a vibrancy and transient accuracy that must be heard to be appreciated. The conversion process from PCM to PWM completely eliminates any jitter present on the incoming signal; again, offering state-of-the-art performance in this most important parameter. Due to the very high clock speed and mathematical precision of our reconstruction filters, the resulting audio signal is totally free of digital artifacts like ringing. A Pure Class A analogue stage with very low output impedance provides the perfect interface to your favourite amplifier. Also, both balanced and single-ended outputs are available.\u003c\/p\u003e\n\u003cp\u003eNext Generation Connectivity\u003c\/p\u003e\n\u003cp\u003eWhile the M51 includes the industry standard SPDIF, AES\/EBU, Optical and Coaxial inputs, it also includes the latest USB technology called USB Audio Class 2. USB Audio Class 2 supports sample rates of 192kHz releasing the previous limitation of USB at 96kHz. A device USB port is included allowing direct connection of a PC or Mac.\u003c\/p\u003e\n\u003cp\u003eThe M51 offers two HDMI inputs and one output with video pass through. This opens up the possibility of using the M51 Direct Digital DAC as the heart of a \"Video 2.0\" system using the mandatory two-channel linear PCM soundtrack from Blu-ray or DVD to make a compelling two-channel high definition theatre presentation. Many symphony orchestras and some specialty music labels are also released in HD recordings on Blu-ray or DVD. The M51 is fully 3D video compatible but there is no surround sound decoding or video processing.\u003c\/p\u003e\n\u003cp\u003eMore than Just a DAC\u003c\/p\u003e\n\u003cp\u003eM51 is a fully functional digital preamp with seven digital inputs and one of the world's best volume controls. As a 'preamp' it is totally noise and distortion free because all switching and volume control is done in the digital domain. There are no analogue circuits except for the Class A buffer at the output of the DAC. While input selection is available from a front panel control, volume can only be selected via remote control. The supplied IR remote also features controls for NAD's matching M50 Digital Music Player. Serial control is available via RS-232 IR and 12V trigger inputs allow the M51 to fully integrate with advanced automation systems.\u003c\/p\u003e\n\u003cp\u003eThe M51 introduces many 'firsts' for the DAC product category: first to support HDMI, first to support USB Audio Class 2 with support for 192kHz, the first to use digital error correction, and the first 35-bit architecture to be found in a DAC.\u003c\/p\u003e\n\u003cp\u003eWhether you want to get into computer audio, 'Home Cinema 2.0' or just want to upgrade your CD player, the M51 Direct Digital DAC will get the best possible performance from every digital format. All this innovation, performance and flexibility come with NAD's legendary sound quality and affordability.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eSpecifications\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eRated Distortion (THD+N with AES 17 filter)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026lt;0.0005% (0dBFS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIMD Distortion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e0.0001%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSignal\/Noise Ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eChannel Separation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026gt;-115dB (ref. 0dBFS Volume -1dB)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSample Rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e32kHz to 192kHz (USB and digital S\/PDIF)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eFrequency Response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e±0.5dB (ref. 20Hz - 22kHz sample rate)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eOutput Level\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e2V (ref. input 0dBFS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eINPUT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eXLR - AES\/EBU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eSPDIF\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003eCoaxial x 1\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eOptical x 1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eHDMI x 2 (stereo only)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eUSB Class 2 Audio: asynchronous 24\/192 support \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIR In\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eTrigger In\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e12V ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eOUTPUT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eHDMI Video Out (3D video pass through)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eAnalogue\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003eUnbalanced: 47 ohms\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eBalanced: 120 ohms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eTrigger Out\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e12V ±20%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cspan style=\"font-size: small;\"\u003eGENERAL\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eAC Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e100-240V AC ~ 50\/60Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eStandby Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e\u0026lt;0.5W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eIdle Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e16W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eUnit Dimension (WxHxD) - Gross\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"font-size: small;\"\u003e435 x 78 x 296mm\u003c\/span\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003e17 1\/8 x 3 1\/8 x 11 11\/16 inches\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eNet Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e5.8kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eShipping Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003e9.8kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eFinish\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"font-size: small;\"\u003eMasters Silver or Black\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e"}

NAD M51 Direct Digital DAC

Product Description
R 34,095.00
or
Maximum quantity available reached.

NAD M51 Direct Digital DAC

Digital Innovation

NAD's Direct Digital™ technology is unique in both its extreme precision and in its speed. This advancement was first introduced in the NAD M2 Direct Digital Amplifier to worldwide acclaim. Now this innovative Direct Digital™ technology is available as a standalone DAC. Instead of using the Direct Digital™ processor to drive a high power output stage, we employ a line level analogue output that will perfectly interface with any analogue system with the M51 Direct Digital DAC.

How Direct Digital™ Operates

NAD's technology uses a very powerful processing engine that operates at much higher speed and with much greater accuracy than typical Digital-to-Analogue converters. Running at 108MHz, the M51 resamples the incoming pulse code modulated (PCM) signal and converts it to a pulse width modulation signal (PWM) with a sampling rate of 844kHz. Operating in a differential mode with double precision, the M51 has state-of-the-art specifications for low noise and freedom from distortion. The extreme headroom afforded by the 35-bit architecture allows for a DSP-based volume control that does not reduce resolution. Even with 24-bit high definition signals, the output can be attenuated by 66dB (very, very quiet) before bit truncation begins.

Pure Performance

The incredible precision of the M51's processing engine gives music a vibrancy and transient accuracy that must be heard to be appreciated. The conversion process from PCM to PWM completely eliminates any jitter present on the incoming signal; again, offering state-of-the-art performance in this most important parameter. Due to the very high clock speed and mathematical precision of our reconstruction filters, the resulting audio signal is totally free of digital artifacts like ringing. A Pure Class A analogue stage with very low output impedance provides the perfect interface to your favourite amplifier. Also, both balanced and single-ended outputs are available.

Next Generation Connectivity

While the M51 includes the industry standard SPDIF, AES/EBU, Optical and Coaxial inputs, it also includes the latest USB technology called USB Audio Class 2. USB Audio Class 2 supports sample rates of 192kHz releasing the previous limitation of USB at 96kHz. A device USB port is included allowing direct connection of a PC or Mac.

The M51 offers two HDMI inputs and one output with video pass through. This opens up the possibility of using the M51 Direct Digital DAC as the heart of a "Video 2.0" system using the mandatory two-channel linear PCM soundtrack from Blu-ray or DVD to make a compelling two-channel high definition theatre presentation. Many symphony orchestras and some specialty music labels are also released in HD recordings on Blu-ray or DVD. The M51 is fully 3D video compatible but there is no surround sound decoding or video processing.

More than Just a DAC

M51 is a fully functional digital preamp with seven digital inputs and one of the world's best volume controls. As a 'preamp' it is totally noise and distortion free because all switching and volume control is done in the digital domain. There are no analogue circuits except for the Class A buffer at the output of the DAC. While input selection is available from a front panel control, volume can only be selected via remote control. The supplied IR remote also features controls for NAD's matching M50 Digital Music Player. Serial control is available via RS-232 IR and 12V trigger inputs allow the M51 to fully integrate with advanced automation systems.

The M51 introduces many 'firsts' for the DAC product category: first to support HDMI, first to support USB Audio Class 2 with support for 192kHz, the first to use digital error correction, and the first 35-bit architecture to be found in a DAC.

Whether you want to get into computer audio, 'Home Cinema 2.0' or just want to upgrade your CD player, the M51 Direct Digital DAC will get the best possible performance from every digital format. All this innovation, performance and flexibility come with NAD's legendary sound quality and affordability.

Specifications

Rated Distortion (THD+N with AES 17 filter) <0.0005% (0dBFS)
IMD Distortion 0.0001%
Signal/Noise Ratio
Channel Separation >-115dB (ref. 0dBFS Volume -1dB)
Sample Rate 32kHz to 192kHz (USB and digital S/PDIF)
Frequency Response ±0.5dB (ref. 20Hz - 22kHz sample rate)
Output Level 2V (ref. input 0dBFS)
INPUT
XLR - AES/EBU
SPDIF Coaxial x 1

Optical x 1

HDMI x 2 (stereo only)
USB Class 2 Audio: asynchronous 24/192 support
IR In
Trigger In 12V ±20%
OUTPUT
HDMI Video Out (3D video pass through)
Analogue Unbalanced: 47 ohms

Balanced: 120 ohms

Trigger Out 12V ±20%
GENERAL
AC Supply 100-240V AC ~ 50/60Hz
Standby Power <0.5W
Idle Power 16W
Unit Dimension (WxHxD) - Gross 435 x 78 x 296mm

17 1/8 x 3 1/8 x 11 11/16 inches

Net Weight 5.8kg
Shipping Weight 9.8kg
Finish Masters Silver or Black

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