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NAD Electronics M51Digital Analog Converter (DAC) This is a very good DAC with almost all inputs ( USB, Optical, Coaxial, HDMI and AES/EBU ) ... were using both balanced and unbalanced output and both are very clean...I dont have the box but will send in secure package if postage is needed ... it is one of the best DAC for value I have ever tried but nowadays I am not using it so better let it go...Got very good reviews if you search... More info : https://nadelectronics.com/product/m51-direct-digital-dac/ Review : https://www.whathifi.com/nad/m51/review Condition: Very Good Payment Method
At A$725 for a very-good condition NAD M51, this is a strong deal, sitting just below the typical Australian used market price of A$750 for a good-condition unit and well under the A$800 seen in local sold listings. Given the original Australian retail was A$1499, this asking price represents excellent value for a well-regarded direct digital DAC that resamples all inputs to 844kHz PWM with 35-bit architecture.
The M51 remains a favorite for its DSP volume control that preserves resolution, superb headroom, and flexible inputs including HDMI, USB, and optical. At this price, the buyer gets a rare, high-performance DAC with genuine technical merit and a clean sound, making it a smart buy for anyone upgrading from budget gear or seeking a transparent, versatile front-end without overspending.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
NAD Electronics was founded in 1972 in London by a group of European audio importers frustrated with the hype surrounding Japanese hi-fi products. Led by visionary American executive Martin L. Borish and brilliant engineer Bjorn Erik Edvardsen, the company emerged from a quest to deliver high-performance audio at accessible prices. Their breakthrough came with the NAD 3020 integrated amplifier, the best-selling hi-fi amp in history, which embodied a philosophy of stripping away non-essentials to prioritize pure sound quality.
The brand focuses on core hi-fi categories, excelling in amplifiers—pioneering Class A/B, Class G, and hybrid digital designs—alongside integrated receivers, AV processors, turntables, CD and cassette players, and modern streamers. While not venturing into speakers, headphones, or cables, NAD emphasizes source components and amplification that integrate seamlessly into home theater and custom installation setups, always upholding principles of innovation, simplicity, performance, and value.
Today, as part of Canada's Lenbrook Group and sold in over 80 countries, NAD holds a commanding mid-tier position in the market, revered by audiophiles for affordable excellence rather than ultra-high-end excess. Its "Truth in Power" legacy earns cult status among knowledgeable buyers seeking reliable, award-winning gear that punches above its price, blending vintage heritage with contemporary streaming and hybrid tech.
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