The NAD C658 is not just a DAC, connected to BluOS the C 658 offers users hi-res network music streaming from NAS drives and almost 20 music streaming services – all controllable from desktop (Mac and Windows), smartphone and tablet (iOS and Android) devices.
Offline streaming means come courtesy of aptX HD Bluetooth (also two-way), and physical connections include phono and RCA inputs, and balanced preamp, stereo subwoofer and front-panel headphone jack outputs.
NAD C658 Dirac Live Room Correction software (the Lite version) offers audio calibration based on your specific system and room.
Module Design Construction has formed an integral part of NAD’s engineering for years, so it’s not surprising to see it make an appearance in the C 658. Essentially MDC sees the DAC’s digital audio and video circuits printed on replaceable modules, allowing them to be upgraded in the future when new formats come around
BluOS on Board
The C 658 is BluOS Enabled which means it boasts the most sophisticated High Res streaming system available. BluOS natively supports nearly 20 streaming music services and indexing of over 250,000 tracks from local network sources. In effect, the C 658 becomes a node in the BluOS ecosystem, allowing hi-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 and affordable to create a whole home audio system with the C 658 at its heart. 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 on all digital inputs in addition to BluOS Streaming content.
Bluetooth aptX HD
The C 658 features two-way wireless Bluetooth capability that is powered by aptX HD for the highest possible sound quality available. Users can easily stream music from smartphones, tablets and laptops or can also use its integrated two-way Bluetooth feature and effortlessly stream music that is playing on the amp to any pair of Bluetooth enabled headphones. aptX HD is becoming more and more popular for its remarkable sound quality and low power consumption compared to Wi-Fi.
Dirac Live – the World’s Most Sophisticated Digital Room Correction System
The C 658 employs Dirac Live® Room Correction software that delivers optimized sound quality for your home theatre system. The built-in Lite version of the software, with the option to upgrade to a full-featured version, measures the acoustic performance of the system within the listening room and optimizes playback performance to provide the most transparent music reproduction possible.
Modular Design Construction (MDC)
The C 658 incorporates a unique feature called Modular Design Construction that is exclusive to NAD. Here is why it’s important. Performance-minded enthusiasts want to embrace the ever-changing world of AV technology while “future proofing” their original investment. So, NAD devised the most important innovation in a decade: Modular Design Construction – an uncommon answer to technology obsolescence. Digital audio and video circuits are on replaceable modules.
With MDC, all major digital circuits can be upgraded and replaced to keep the unit forever young and capable. This NAD innovation is a unique architecture that keeps pace with the fast-changing world of technology. With MDC, the ability to easily upgrade a component to include future digital formats is totally unique and unprecedented. Though installation and setup of any MDC module is straightforward, consumers are encouraged to have this upgrade professionally installed by their authorized NAD dealer. The C 658 comes with two MDC slots for future expansion.
NAD designers didn’t forget traditional audiophiles by including a high-quality phono stage, analogue inputs, balanced preamp output and stereo subwoofer outputs and a dedicated high current headphone amplifier with a ¼” jack right on the front panel. CI enthusiasts will be happy to know that the C 658 has an RS-232 serial port with certification and chassis drivers forthcoming for Control4, Crestron, RTI, URC, and ELAN.