SKU: 15813501537

NAD C 658 BLUOS STEAMING DAC

$1574.55 $1749.50
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Description

NAD C 658 BLUOS STEAMING DACC 658 BluOS Streaming DAC Introducing the NAD C 658 Redefining the Architecture of Hi Fi Playback As we move deeper into the 21st Century the way music is distributed and enjoyed continues to evolve away from physical media to streaming. It also has moved away from analog to digital. The C 658 has incorporated these fundamental truths to create an entirely new type of component that combines a Network Streamer, a state of the art DAC, and many aspects

 

C 658

BluOS Streaming DAC

 

Introducing the NAD C 658

Redefining the Architecture of Hi-Fi Playback

As we move deeper into the 21st Century the way music is distributed and enjoyed continues to evolve away from physical media to streaming. It also has moved away from analog to digital. The C 658 has incorporated these fundamental truths to create an entirely new type of component that combines a Network Streamer, a state-of-the art DAC, and many aspects of the traditional Preamplifier into a single highly cost effective package. And thanks to NAD’s exclusive Modular Design Construction, it will keep pace with the latest technology, not yet introduced, but inevitably coming in the future. In fact, an optional HDMI 4k switcher module is available now allowing the best sound from any of the many HDMI sources available (like game consoles and video STBs). While the C 658 immediately replaces (or adds) your Streamer, DAC, and Preamp, it also adds many new features you may not be aware of, like a Bluetooth aptX HD transmitter to use with your wireless headphones. The highly flexible outputs allow for a true balanced connection to powered speakers or amplifiers. Single-ended connections for amplifiers and subwoofers are also provided and include an adjustable subwoofer crossover executed perfectly in the digital domain. A highly sophisticated MM Phono input is also included along with line inputs for legacy analog components.

BluOS™ Enabled

Also on board is BluOS, the most sophisticated High Res streaming system available. BluOS natively supports over 15 streaming music services and indexing of over 250,000 tracks from local network sources. The C 658 becomes a node in the BluOS ecosystem allowing high res network streaming to 64 zones and control options for iOS, Android, Windows, and Mac OS phones, tablets, and desk top devices. BluOS also supports all major smart home controllers and is available in a wide range of products making it easy to create a whole house audio system with the C 658 at its heart.

Traditional NAD Performance and Value

The C 658 is part of our Classic Series of components which have an enviable reputation for giving Music Lovers more enjoyment for less money. If you want a solid block of hand–crafted aluminum with gold plated accents you’ll need to look elsewhere. If you want state-of-the-art performance and features in a sturdy no-nonsense package then you have the right address.

High Resolution in Every Detail

Most NAD components have been High Res for 45 years with very wide bandwidth, low distortion, and ultra-low noise. We just never had High Res source material to play. With High Res digital recording and streaming, combined with advanced technology like MQA, record companies are opening their vaults and releasing Studio Master Quality recordings. MQA decoding is available through BluOS Streaming content. The C 658 is pure High Res from input to output and features the ESS Sabre 32bit DAC , one of the best performing DACs on the market today with its 118dB Dynamic Range and incredibly low jitter spec. All preamp functions are executed in the digital domain including the same wide range non-truncating digital volume control used in our Masters Series components. This offers an incredibly short analog signal path that, rather uniquely, is identical for all volume settings. Sophisticated active power supplies provide super clean voltages to all circuits to keep noise and distortion at the edge of measurability.

Make the Speakers Disappear (It’s Not Magic)

The C 658 is also the first NAD stereo component to feature Dirac Live room correction*, the most sophisticated and effective room correction available. Dirac corrects the impulse response of your speakers, in addition to the frequency response of your room, for a truly transparent window into the musical performance. When the room resonances are tamed and the transient response is corrected, the result is magical. You have never heard your speakers sound this invisible or this good!

*These features will be implemented via future software upgrades. Note: The C 658 will include a license for Dirac Live with the option for advanced users to upgrade to a Dirac Live Full Frequency version.

Master Quality Authenticated

Master Quality Authenticated (MQA) is a revolutionary end-to-end technology built into every BluOS Enabled amplifier to capture and deliver MQA music to your speakers in the purest quality. All BluOS Enabled players and systems include a powerful decoder and audio renderer for the millions of the MQA encoded songs, The MQA logo shown in the BluOS app indicates that the unit is decoding and playing an MQA stream or file, and lets you know that you are hearing exactly what the artist recorded and approved in the studio.

 

SPECIFICATIONS

LINE INPUT, PRE-OUT

  • THD (20Hz – 20kHz)
  • <0.005% at 2V out
  • Signal-to-Noise Ratio
  • >106dB (IHF; A-weighted, ref. 500mV out, unity gain)
  • Channel separation
  • >80dB (1kHz)
    >70dB (10kHz)
  • Input impedance (R and C)
  • 22 kohms + 100pF
  • Maximum input signal
  • >4.5Vrms (ref. 0.1% THD)
  • Output impedance
  • Source Z + 240 Ohm
  • Input sensitivity
  • 93mV (ref. 500mV out, Volume maximum)
  • Frequency response
  • ±0.3dB (20Hz – 20kHz)
  • Maximum voltage output – IHF load
  • >4.5V (ref. 0.1% THD)
  • Tone Controls Treble
  • >±7.0dB at 20kHz; Bass: ±7.0dB at 60Hz; Balance: -10dB

PHONO INPUT, AUDIO PRE-OUT

  • THD (20Hz – 20kHz)
  • <0.01% at 2V out
  • Signal-to-Noise Ratio
  • >84dB (200 Ohm source; A-weighted, ref. 500mV out)
    >76dB (MM cartridge source, IHF; A-weighted, ref. 500mV out)
  • Input sensitivity
  • 1.44mV (ref. 500mV out, Volume maximum)
  • Frequency response
  • >±0.3dB (20Hz – 20kHz)
  • Maximum input signal at 1kHz
  • >80mVrms (ref. 0.1% THD)

LINE INPUT, HEADPHONE OUT

  • THD (20Hz – 20kHz)
  • <0.005% at 1V out
  • Signal-to-Noise Ratio
  • >110dB (32 Ohms loads; A-WTD, ref. 2V out, unity gain)
  • Frequency response
  • ±0.3dB (20Hz – 20kHz)
  • Channel separation
  • >>60dB at 1kHz
  • Output impedance
  • 6 Ohms

DAC

  • Supported audio file formats
  • MP3, AAC, WMA, OGG, WMA-L, ALAC, OPUS
  • High resolution audio formats
  • MQA, FLAC, WAV, AIFF, Supports converted DSD playback via the BluOS desktop app (only)
  • Native sampling rates
  • up to 32bit/192kHz
  • Bit depths
  • 16 – 24

BluOS

  • Supported operating systems
  • Plays music from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista, 7, 8 to current Windows Operating Systems and Mac OS X versions
  • User interface mobile operating system
  • luOS – Free Android and iOS App available online at Google Play and Apple App store
  • Supported cloud services
  • Spotify, Amazon Music, TIDAL, Deezer, Qobuz, HDTracks, HighResAudio, Murfie, JUKE, Napster, Slacker Radio, KKBox, Bugs
  • Free internet radio
  • TuneIn Radio, iHeartRadio, Calm Radio, Radio Paradise
  • Bluetooth quality
  • Bluetooth aptX HD wireless built-in
  • Bluetooth connectivity
  • Two-Way (Transmit and Receive)
  • Network connectivity
  • Gigabit Ethernet RJ45
    WiFi 5 (802.11 b/g/n)

DIMENSIONS AND WEIGHT

  • Dimensions (W x H x D)**
  • 435 x 100 x 405mm (17 1/8 x 3 15/16 x 16)
  • Shipping Weight
  • 10.1kg (22.3lb)

 

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 15813501537

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    4.3 ★★★★★
    Based on 27 reviews
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    Product Reviews
    D
    Verified Purchase
    Dr. Mark
    Phoenix, US
    ★★★★★ 5
    A Dutch Oven Ready & Able for Quality Food Preparation
    Size: 7-Quart
    Excellent dutch oven. Large and does its job well. Whether its on the stove or being utilized in the oven for baking, thos cast iron dutch oven performs by producing gourmet style food.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 9, 2026
    D
    Verified Purchase
    Diana
    Charlottesville, US
    ★★★★★ 5
    Great quality and value
    Size: 7-Quart
    Heavy duty and well made. Love that it’s pre seasoned. I’m using it to bake artisan bread so it’s important that the lid fits well, which it does. The price is great for a pot this size and quality. The black is perfect for the color because I’m preheating it at 500 degrees Fahrenheit and baking at 450.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 30, 2026
    S
    Verified Purchase
    Slipflash
    Bozeman, US
    ★★★★★ 5
    Perfect size, perfect weight for couples soups
    Size: 2-Quart
    Quality cast, well finished stove top pan. Keeps food warm longer. Easy to clean.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 28, 2026
    B
    Verified Purchase
    Brian R
    Draper, US
    ★★★★★ 4
    lower quality casting but very functional. reseason is a must. good purchase otherwise
    Size: 2-Quart
    this was an amazon primeday impulse buy. initially when reading the reviews i was skeptical of its quality at all and attempted to cancel but i could not(too late). i figured it wasnt the end of the world when it showed up as i only payed 20$ on sale for it. well, it turns out thats a steal of a deal for this pot. when i opened the package i checked it all over with a magnet. who knows it could be lower quality pot metal but its definitely ferrous material. the season on it is real, like what you find on a lodge pan but not done well, it was sticky. so i boiled a pot of water and scrubbed the lid and pot insides with a scour pad to remove most of it. it looks exactly like youd expect cast iron to look and it has a smell reminescent of a deseasoned wet cast pan. so i trust it. my version should be 2qt, i do not know if they make larger versions. i trust it to work in the future and it seems like itll make great stews and soups. possibly even a good camp pot if youre into carrying cast iron with you. its not massive and its not overly heavy at maybe 3 lbs. it was a good buy and im happy with it. plan to add a bail so i can use it for camping as well as kitchen use. in conclusion its a lower quality casting but still very functional. it must be reseasoned to be useful but for the price i almost expect it. most cast iron cookware are not made to the spec they used to be and thus require love from the owner to really work well.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 13, 2025
    K
    Verified Purchase
    Kid Icarus
    Draper, US
    ★★★★★ 5
    Amazing Dutch!
    I've been on a cast iron craze recently. I think back to college when I'd watch Yan Can Cook, and Chef Martin Yan would lean over into the pan and say, "It's got to be hot hot!" I finally realize what he means after all these years of cooking. Heat makes for awesome cooking. It gives wok hei. It makes the difference between a juicy, seared steak vs a dry, tough one. When I discovered this secret, I was like a kid in a candy store, picking this cast iron, that cast iron, another cast iron, please. When I bought the 5 quart Amazon Basics dutch oven, I figured that at the low price, if it came with issues, it wouldn't be an expensive loss. I was impressed with the packaging. Amazon did not want this pot to break, so it had form fitted Styrofoam everywhere, pot and cover nicely separated. There was a nice Amazon Basics logo on the bottom of the pot. Upon close inspection, I thought I found a hairline crack on the cover. It seems when they casted it, part of the iron folded over on itself and formed the line. Someone then took a sander and sanded part of it slightly. What I thought was the hairline crack was actually the edge of the polished surface. The next day, I cooked bacon in it. I fired up the Camp Chef Explorer stove and cooked two pieces of bacon in the pot. I also flipped the cover upside down and cooked two pieces of bacon in it. The cover makes a very nice ad-hoc skillet. After it cooled, I inspected the cover again, and it is not a hairline crack. The bacon seasoning started covering up both the polished and unpolished surface into a nice, uniform seasoning. The following day, I made chicken stew in it. While carmelizing the onions and carrots, I made another nice discovery. The flat bottom lends itself nicely to efficient stir frying. Sometimes, in a wok, I come across the problem of the bamboo spatula not being able to get under the food, so I end up chasing the food up the sides of the wok unable to flip it. The part of this dutch oven where the bottom meets the sides creates a nice angle that pushes the food onto my bamboo spatula for easy flipping. Yesterday, I took it to my parents' house and made artisan bread in it. Everyone was impressed with the crispiness of the bread crust. Everyone came back for seconds. Needless to say, I no longer have the dutch oven. My mom liked it so much I gave it to her. It's almost Mother's Day, and who would say no to their mom? *ahem* Amazon...another cast iron, please! LOL PS: The lid fits a 10 inch skillet but not a 10.25 inch skillet. It falls into a 10.25 skillet.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 6, 2019

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