BLUOS™

BluOS™ – Multi-room streaming in HD quality
BluOS™ is an innovative, wireless system that allows music to be streamed throughout the house. The associated user interface is one of the world's few solutions for streaming uncompressed high-resolution 24-bit / 192 kHz music data to network-integrated players. BluOS™ uses only the local network for transmitting music and organizing the platform – and is controlled with the BluOS™ app available for smartphones and tablets or a Windows or Mac computer. Since BluOS™ is multi-room capable, up to 64 zones can be integrated and optionally controlled synchronously with one audio stream or individually with different programs at different volumes. Bluesound supports numerous file formats from MP3 to MQA Studio Master quality. Whether streaming music services, your own music library on a hard drive or internet radio – with BluOS™ you always have access to your favorite music throughout the network.
BluOS™ can also be integrated into some innovative home automation systems, so that in addition to the intelligent control of lighting, heating and other household technology, the operation of a BluOS™ multi-room system via the Smart Home panel is also possible. Driver software for systems from Control4, Creston, ELAN, iPort, Lutron, Push, RTI and URC is available for download on the Bluesound homepage (bluesound-deutschland.de).

Dirac Live® – Software for correcting room acoustics and impulse response

Dirac Live® is an innovative room correction whose basic function is to measure an audio system to the acoustics of the listening room. But in addition to adjusting certain frequencies, Dirac Live® uses advanced algorithms to also analyze the impulse response of the played audio signals. This corrects possible deviations between the impulses contained in the original signal and their reproduction, so that the HiFi system sounds more balanced, natural and spacious. While the NAD M17.2 has the full version of Dirac Live® on board, the other devices with this feature have the light version, which only processes the particularly problematic low frequencies up to 500 Hz. An upgrade to the full version is possible at any time.

Key Features

BluOS™ Network Streamer
ESS Sabre D/A converter with 24-bit / 192 kHz resolution
Support for the Studio Master format MQA
Dirac Live® Room Correction (light version, upgrade optional)
Integrated bidirectional Bluetooth® aptX™ HD module
AirPlay 2
BluOS™ voice control via Siri and Amazon Alexa
Roon Ready certification
2 analog high-level inputs
Phono MM input
2 optical and 2 coaxial digital inputs
Balanced XLR and RCA preamplifier outputs
2 subwoofer outputs
2 slots for MDC modules, currently DD HDM 2
Gigabit Ethernet
Dual-band WLAN a/c/n
USB 2.0 port
High-level headphone output
Trigger input and output

MQA – Music in Studio Master Quality

MQA is not a new file format, but an innovative way to package large music files with complex encoding, efficient compression technology, and a digital signature so that even original Studio Master recordings in 24 bit/192 kHz format can be packaged into comparatively small data packets and made available online. The music data is packaged in any container such as ALAC, FLAC or WAV. When played back via a decoder integrated into BluOS®, the player unpacks the file completely and returns it to its original format, the Studio Master File, without loss.

Apple AirPlay 2

The C658 can be integrated into an Apple network via AirPlay 2 and then selected directly as a playback device for your music stream via your Mac, iPhone or iPad. And if you have activated Siri voice control on your Apple device, a simple "Hey Siri, play the latest Paul McCartney album" or "Hey Siri, play NDR 2" is enough, and your NAD HiFi system will immediately start playback.

Line Input, Pre-Out

THD (20 Hz – 20 kHz)
<0.005% at 2V out

Signal-to-Noise Ratio
106dB (IHF; A-weighted, 500mV out, unity gain)

Channel Separation
80dB (1 kHz)
70dB (10 kHz)

Input Impedance (R and C)
22 kilohm + 100 pF

Maximum Input Level
4.5V rms (0.1% THD)

Output Impedance
Source Z + 240 ohms

Input Sensitivity
93mV (500mV out, volume at max)

Frequency Response
±0.3 dB (20 Hz – 20 kHz)

Maximum Output Level
4.5V (0.1% THD)

Tone Controls
Treble: >±7.0dB at 20 kHz; Bass: ±7.0dB at 60 Hz; Balance: -10dB

Phono Input, Pre-Out

THD (20 Hz – 20 kHz)
<0.01% at 2V out

Signal-to-Noise Ratio
84dB (200 ohm source; A-weighted, 500mV out)
76dB (MM cartridge, IHF; A-weighted, 500mV out)

Input Sensitivity
1.44mV (500mV out, volume at max)

Frequency Response
±0.3 dB (20 Hz – 20 kHz)

Maximum Input Level at 1 kHz
80mV rms (0.1% THD)

Line Input, Headphone Out

THD (20 Hz – 20 kHz)
<0.005% at 1V out

Signal-to-Noise Ratio
110dB (32 ohm load; A-weighted, 2V out, unity gain)

Frequency Response
±0.3 dB (20 Hz – 20 kHz)

Channel Separation
60dB at 1 kHz

Output Impedance
6 ohms

DAC

Supported Audio File Formats
MP3, AAC, WMA, OGG, WMA-L, ALAC, OPUS

Supported High-Res Audio File Formats
MQA, FLAC, WAV, AIFF, converted DSD playback via the BluOS desktop app (only)

Sampling Rate
up to 32 bit/192 kHz

Bit Depth
16 – 24 bit

BluOS

Supported Operating Systems
Music playback from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista 7-10, Apple Macintosh 7-10

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®
Bluetooth® aptX™ HD

Bluetooth® Connectivity
Two-Way (Receive and Send)

Network
Gigabit Ethernet RJ45
Wi-Fi 5 (802.11 b/g/n)

Dimensions and Weight

435 x 100 x 405 mm

10.1 kg

• NAD C658 Test Stereo

DALI GmbH
Berliner Ring 89, 64625 Bensheim, DE
support@nadelectronics.com
https://www.nadelectronics.com