NAD C 658 BluOS
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We offer free 2-day shipping on most products within the continental US.
Weekdays - Orders placed by 2pm EST ship same day. Orders placed after 2pm EST will ship the following business day.
Weekends - Orders placed on Saturday and Sunday will ship Monday.
Orders requiring motor freight delivery may take more than two business days. Once your order has shipped, you'll receive a shipping confirmation email with a tracking number for easy tracking.
Orders that contain items that are currently backordered, special order, or out of stock will ship complete once all items are in-stock unless otherwise requested.
If you need it faster, you will have the option of choosing a quicker shipping option when you checkout on the website.
At this time, we do not ship internationally and orders to Hawaii and Alaska may incur an additional shipping charge. Please contact us at 888.899.8776 or email support@audioadvice.com to confirm.
Rerouting and Address Changes
We cannot make ANY address changes once an order is placed. If you are unable to accept delivery of your package as ordered, we will need to cancel your order, return the package to sender and have you replace your order through our website.
Keep the Box
We suggest you keep the shipping box or boxes for at least 30 days. It is actually a great idea to keep boxes for audio products for the life of the product. Having the box and all packing will increase the trade-in value should you decide to move up and they are handy to have should you ever need to send the unit in for repair.
How To Receive a Motor Freight Order
The trucking company will contact you to schedule a convenient time to deliver the order. Please note that you must be present for delivery.
Visually inspect the box to make sure you see no signs of damage. If you notice any damage at all, take some pictures with your phone and make a note of them on the delivery receipt the driver will ask you to sign. If it is obvious that the product is damaged, please refuse the order and contact us immediately at 888.899.8776 or email support@audioadvice.com.
Open your box as soon as possible and inspect the product for damage and contact us if you find anything wrong.
uShip In-Home Delivery
Due to current concerns surrounding COVID-19, uShip is able to offer THRESHOLD SERVICE ONLY at this time. To ensure everyone’s safety, uShip is advising carriers to refrain from making room-of-choice deliveries. Threshold service consists of the shipment being brought into the first door of the address or the lobby of an apartment/condo, and does not include set-up, installation, assembly or debris removal.
What to Expect: Most oversized items will be delivered within 2-3 weeks. Your carrier will place your item inside the first door of the address or the lobby of an apartment/condo.
Appointment Scheduling: Your delivery partner will call 24-48 hours prior to delivery to arrange an appointment window.
How to prepare for in-home delivery:
- Determine the clearest path from the street to your home
- Measure entrances and hallways to ensure your item will fit
- Remove any wall hangings or clutter to ensure a clear path and to prevent damages
- Remove old furnishings to allow placement for your new piece
Check your furniture for damages: We rarely expect damaged furniture, but in the instance it does happen, we have you covered. Once your item’s packaging is removed, check for any damages that may have occurred in transit. Take pictures of any damages and notate appropriately on the delivery receipt. Keep possession of the damaged piece and contact us via phone or email and we’ll start the process to repair/replace your new piece of furniture. For uShip customer support, please call 800-698-7447.
At Audio Advice, we pride ourselves on customer satisfaction. We'll bend over backward to make sure you're 100% satisfied and we won't accept anything less. We offer 30-day hassle-free returns and personalized service from real, live people.
If an item doesn't meet your expectations, you may return or exchange it in its original condition and packaging within 30 days for a full refund, minus shipping fees. Items shipped back in like new condition through standard shipping carriers will only incur a flat fee of $15 to return. If the items were initially shipped through free scheduled delivery via motor freight (commonly referred to as LTL), returning them will result in return shipping fees starting at $150. These items include but are not limited to, oversized items such as TVs, certain subwoofers, floorstanding speakers, furniture, and most items weighing over 75 pounds. Return fees will also apply for exchanges. We want to treat your system as if it is our own and want you to be completely satisfied with your purchase.
Please see the instructions below. We only accept returns for any product purchased directly from our website. If merchandise is not returned in its original condition or is missing packaging, manuals, accessories or other parts, or the resale value of the product has been impaired, a partial refund will be given and calculated on a case-by-case basis.
Non-Returnable Items
The following items cannot be returned or cancelled:
- Special/Custom Order Items
- Open Box Products
- Gift Cards
- In-ear headphones cannot be returned once the packaging has been opened due to personal hygiene reasons. Please contact our customer care team if you'd like help choosing.
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Turntables With a Broken Stylus: All turntables ship out with the stylus intact. If you return a turntable or phono cartridge with a broken or missing stylus you will be subject to a return fee. Please be careful when setting up your turntable and contact us with any questions.
Is It Easy To Return An Item?
Yes, simply give us a call at 888.899.8776 or you can email our support team at support@audioadvice.com. Many times our team of experts can help figure out why the product might not be working like you expected and get things fixed over the phone, so don’t be surprised if we ask a few questions, we love troubleshooting!
If our tech help can not make you happy, we will email over a return shipping label with a Return Number.
Hopefully, you saved all of the original item’s box and packaging inserts. You will want to pack back up your return or exchange in the same way it came out of the original box. Once you have everything packaged correctly, tape the box on the top and bottom to assure it stays together. If Audio Advice shipped the item to you inside a second box, it's a good idea to use that same extra box to help prevent damage on its way back to us. To avoid it accidentally coming back to you, use a magic marker to cross out the old shipping label or just tear it off.
The return shipping label we send you will have our address on it, just make sure you take the box to the right shipper (UPS, FEDEX, or USPS) as per the label.
If you are close to one of our stores, please let us know if it is more convenient for you to return it to us directly. You will still need to get a return number by contacting us and shipping and/or restocking charges may apply.
When Will I See My Refund?
It usually takes around 7-14 days for the refund to show up on the payment method you used. We do inspect all returns for damage and accuracy of the item inside the box before issuing a refund. Some items may be subject to shipping and restocking fees.
Can I Exchange My Purchase For Something Different?
Sometimes those big speakers just don’t fit in the room or you might have bought a small subwoofer and later found out you’d love a bigger one. If you would like to make an exchange within 30 days of receiving your item, just give us a call at 888.899.8776 or email support@audioadvice.com and we will help work out the details. Additional shipping charges and return costs may apply.
How Do I Cancel An Order?
If the item has already shipped out or is a special order item, it is not possible to cancel the order. Please contact us at 888.899.8776 or email support@audioadvice.com to start the return process.
What If I Find Shipping Damage?
We need to know right away about any shipping damage. Please contact us at 888.899.8776 or email support@audioadvice.com within 48 hours of your delivery so we can get the ball rolling on making things right. It’s very helpful to take some pictures and email them to us if possible.
Can I Refuse A Shipment?
You can, but unless the item is damaged, shipping and restocking fees will be deducted from your refund. If your item arrives damaged and you are lucky enough to be there, snap some quick pics and refuse the order. Then contact us so we can get a replacement on the way.
What Happens If My Order Is Defective?
This is actually pretty rare, most consumer electronics work fine out of the box 99.9% of the time. We’d like for you to contact us first by calling 888.899.8776 or email support@audioadvice.com so we can help get to the bottom of things. If your item is indeed defective during the first 30 days, we can usually exchange it for a new, replacement unit.
What About Service After 30 Days?
Audio Advice has a great relationship with all of our brands and can help you with warranty service by the brand after our 30-day guarantee period. Even after the warranty expires, we can arrange for service by the brand on products purchased from Audio Advice. Just call 888.899.8776 or email support@audioadvice.com.
How Do You Determine A Restocking Fee?
You may not believe it, but sometimes we receive items back that were put in the box with zero packaging and are completely destroyed or are missing many of the pieces that came with the item. We also track serial numbers and will get back different serial numbers. We’ve even seen different items than what we shipped out be returned. However, it’s very important to package your return properly so that nothing goes missing or gets damaged in shipping, which will result in a restocking fee or even no refund at all. If a product is opened and the market value of the product is reduced, then a restocking fee may be applied to the cost of restocking and the reduced market value of the product. The bottom line is if you treat us fairly, we will do the same.
Audio Advice strives to provide industry-leading support and service while also maintaining the lowest prices available on products for our customers. We work hard with our vendors to bring our customers the best products at each price point. As a part of that process, we work with our vendors to provide the lowest pricing in our stores and on our website.
Our prices should always be the same as any other authorized dealer, including big-box retailers and major online retailers.
If you believe that you have found a lower advertised price from a legitimate authorized seller, call us and let us know so we can make sure we can correct any inadvertent error on our side. As a matter of policy, we update our prices automatically if a vendor changes its authorized pricing policies, so we generally have the best prices all the time. Increasingly, there are knock-off copies of products online, usually sold by non-authorized dealers.
Please be sure that the item meets the following conditions:
- The item is brand new, in stock, and available for purchase
- The item has the identical model number, color, etc as the item on our site.
- The seller is an authorized dealer
As always, our goal is to provide a terrific customer experience, including industry low prices. We appreciate your support.
Overview
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 Qualcomm aptX HD Bluetooth 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 desktop 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.
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 NAD's 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!
TRADITIONAL NAD PERFORMANCE AND VALUE
The C 658 is part of NAD's 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.
Details & Specs
PREAMPLIFIER
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
Native sampling rates - up to 32bit/384kHz
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 - BluOS – 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 (802.11ac)
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)