Back in May 2014, I reviewed NAD’s Masters Series M50 Digital Music Player ($2499) and M52 Digital Music Vault ($1999 with 2TB storage). 1 At the 2017 Consumer Electronics Show, NAD announced the M50.2, which is almost identical to the original M50 but now incorporates two 2TB hard disks, arranged as a 2TB RAID array, to ensure data integrity, and adds TosLink and coaxial digital inputs, Bluetooth with aptX for streaming music from a smartphone or tablet, and two single-ended analog inputs—all for $3999, or $499 less than the combined cost of the two earlier products.
Like the M50, the M50.2 offers WiFi and Ethernet connectivity, and has a CD drive, accessible via a slot on the front panel under the color TFT touchscreen, that can be used to play CDs, or rip them as FLAC, WAV, or high-bit-rate MP3 files.
The M50.2 will play files with bit depths of 16 or 24, and with sample rates up to 192kHz. DSD playback is promised by the end of this year. There are no analog outputs, but the digital outputs include HDMI, AES/EBU, and optical and coaxial S/PDIF. Playback and control of the files stored on the M50.2’s hard drive can be either via the touchscreen, which displays the album cover and metadata, or via the BluOS app running on a tablet or PC. (Android and iOS devices are supported, and the app is available for Windows and OS X.) The M50.2 will integrate with third-party control systems—Control4, Crestron, RTI—to allow it to be integrated with smart homes. It can also be a Roon endpoint, as all BluOS devices are Roon Ready.
NAD called the M50 a “software-defined product,” and the same is true of the M50.2, which is also based on an ARM processor. According to an e-mail from Greg Stidsen, NAD’s director of technology and product planning:
Conceptually, the M50.2 is meant to replace a computer and NAS for what’s been known as “computer audio.” While computer audio can be made to play high-rez music well enough, it does not give the same attention to sonic detail as a dedicated device that integrates these functions and focuses solely on music storage and playback. And if you’re not a computer geek it can be very difficult and frustrating to setup and maintain a competent computer based system.
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Denne historien er fra December 2017-utgaven av Stereophile.
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German kitchens, Japanese amps, and Afropop gems
BRILLIANT CORNERS - I have a day job at a museum. One of my favorite things about working there is taking the elevator from my office down to one of the floors open to the public; I walk into the galleries through a discreet panel in the wall. This makes me feel like I'm in one of those horror-movie manors with a tunnel concealed behind a bookshelf. Sometimes I startle people, which I kind of enjoy.
EDITOR'S PICK - RECORDING OF THE MONTH
The record business was awash in money and power. Vinyl LPs were still five bucks, and while the pressings could be suspect, the music-buying public still snapped them up en masse.
The Butthole Surfers wipe out
REVINYLIZATION - Music's lunatic fringe drifts further out every hour. As it should. In this century, with computers playing an ever-larger role, music continues to fragment and become infinitely more varied. This splintering is either the essence of what keeps it relevant as an art form or something profoundly disturbing, to be hated and feared.
You're only lonely
AURAL ROBERT - The least surprising story in music today is the inevitable passing of irreplaceable talent. Tenor saxophonist Benny Golson died at age 95 the day I finished this salute to another fallen star, Southern California singer/songwriter John David \"JD\" Souther.
PS Audio Aspen FR5 - LOUDSPEAKER
I remember the first PS Audio product: a simple phono stage. It was so simple - a passive RIAA eq filter flanked by a pair of primitive op-amps - that when the schematic was made public, I built one myself; I was in the midst of my DIY years. I thought it was, to use a word from that time, nifty.
TEAC UD-701N - STREAMING PREAMP, D/A CONVERTER
In Gramophone Dreams #88, I described the sound of TEAC's VRDS-701T CD transport as \"dense and precise in a way I had never previously heard from digital.\" I went on to explain, \"by dense, I mean there was a tangible corporeality effected by seemingly infinite quantities of small, tightly packed molecules of musical information.\"
Sonus faber Sonetto V G2 - LOUDSPEAKER
Here's a hard truth: A written review of a full-sized speaker any speaker, really-is, at best, semi-useful. We all listen differently, we have different musical tastes, our system electronics are different, and our listening rooms vary a lot. You will gain a general picture of a speaker's capabilities and foibles from John Atkinson's measurements, and I can tell you how the speakers sound to me, in my room. But that's it. You need to hear them for yourself before making a buying decision. The best I can do is tell you how my music brain felt when the speakers were in my house and making music.
STEREOPHILE'S 33RD ANNUAL - PRODUCT OF THE YEAR AWARD 2024
When Stereophile's Product of the Year Awards were first published, in 1992, we decided that unlike some other publications and their awards schemes, we would keep the number of categories to a minimum. That way, we would avoid what the late Art Dudley once described as the \"every child in the class gets a prize\" syndrome.
Moon 861 - POWER AMPLIFIER
It is unusual to begin a review with a detailed discussion of setup. But setup protocol for the Moon 861 power amplifier ($22,000 each), the top-level amplifier in the North Collection from Moon, which I reviewed bridged in mono, proved crucial to its sound.
Mobile Fidelity, PrimaLuna, and First Watt redux
GRAMOPHONE DREAMS - It's important for readers to remember that I've spent my adult life as an artist and mechanic. Making things. Working as a tradesperson during the day then at an easel or workbench at night.
