Performance That Redefines Hi-fi Separates
The C 510 Direct Digital-Series Preamp/DAC promises to redefine hi-fi separates. For decades, audiophiles have organized their systems with a source component, such as a CD player, along with a preamplifier and a power amplifier driving a pair of speakers. This has recently changed and today, the CD player might be replaced by a computer or dedicated music streamer connected to the Internet or local Network Attached Storage.
The best of these components are capable of streaming high-res 24-bit studio master recordings, which are now readily available. Thanks to the incredible convenience and stunning sound quality of computer audio, many music lovers have completely replaced all physical media with digital music files. It is for this purpose that the C 510 Direct Digital-Series Preamp/DAC was created.
Unlike a traditional analog preamplifier, the C 510 Preamp/DAC does not produce any noise or distortion that can obscure detail and limit the performance of many systems. By performing preamp functions like volume and source selection in the digital domain, the C 510 shortens the signal path and opens up new system possibilities. Whether driving your favorite power amplifier or feeding active loudspeakers, the C 510 has the requisite drive and finesse to get the best possible performance.
NAD Direct Digital Innovation
Built using the incredible processing power and precision of NAD's own Direct Digital architecture, the C 510 ushers in a new era of affordability for state-of-the-art performance. The C 510’s dynamic range, the accurate portrayal of music’s subtle nuances from soft to loud, betters other DACs and preamplifiers by about 20 dB! That is a thousand times more accurate. And you can hear it in both the precision micro-dynamics and the dead silence of this remarkable device.
Because the volume level is controlled by mathematics in the digital domain, there is no mechanical or electrical imprecision – all volume levels have exactly the same circuit conditions. Of course, this requires very high resolution, which is provided by the 35-bit architecture of the C 510. Even 24-bit files are not truncated until well below the threshold of audibility.
The C 510 includes connectivity for a wide variety of digital sources including a USB Type B port for direct connection to your PC or Mac. This port operates in asynchronous mode, meaning that the C 510 provides the precision clock for the USB data rather than the often imprecise clock in the computer, plus it supports sampling rates of up to 192kHz and 24-bit depth.
Two HDMI inputs with a video pass-through provide a secure encrypted path for High Res Audio, and allow the C 510 to perform a limited role as a video switcher. The two-channel PCM audio track that is present on all video programming is stripped from the HDMI input with the video passing untouched to a connected video display – there is no surround decoding. NAD has also included 3 SPDIF inputs – all 24/192 capable – in optical, coaxial and AES/EBU formats.
Thoughtful, Simple Design
The analog output operates in true balanced mode driven by a 'Class A' biased operational amplifier. Both Balanced XLR and single-ended outputs are provided to get the best performance with any amplifier. As with all NAD products, special care was taken designing the power supply and critical circuit layout to optimize the performance of the premium parts used extensively throughout the C 510.
A 12V trigger and RS-232 port allow for system automation interface. The control interface couldn’t be simpler with Power, Input Selection and Volume Control on both the front panel and the supplied IR remote. Selected input and incoming sample rate are displayed on the front panel display.
Purity of Design
As a pure digital device, analog inputs have not been included. This purity of design and singleness of purpose is in the very best tradition of high-end audio. Like all NAD products, the C 510 Direct Digital Preamp/DAC offers exceptional value and a remarkable level of performance. The C 510 is the perfect centerpiece to a cutting edge high-resolution digital audio system.
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