Clocking is vital in a digital audio source because any timing errors that occur in the DAC will be converted directly into errors in the analogue output. dCS DACs can act as the system master clock, but listening tests have shown that there is no substitute for a high-quality, dedicated master clock.
Used as part of the Scarlatti digital audio playback system, Scarlatti Master Clock improves on an already spectacular sound and takes it into an entirely new domain. Added to a dCS system, images snap into sharper focus and the music displays a substantially greater sense of authority and power as well as noticeably higher resolution of detail.
Scarlatti Master Clock is based on our professional studio master clocks and the highly successful Verona clock. All dCS Master Clocks are subjected to rigorous in-house testing and the crystal oscillators are pre-aged as well as being selected for long term stability.
Scarlatti Master Clock now features an asynchronous USB input which allows high resolution audio to be played from a computer. In this mode the Master Clock synchronises the audio by providing a feedback pipe to the PC or Mac. The computer’s audio stream is effectively clocked by the Master Clock, for dramatically lower jitter. Clock frequency is automatically switched to suit the incoming audio stream, resulting in extremely accurate performance.
dCS equipment is designed to generate and accept industry-standard Word Clock on 75 ohm coaxial cable. Other manufacturers’ equipment designed to accept standard Word Clock can be used with our clocks. Non-standard clock formats must be assumed to be proprietary to that manufacturer.
All Scarlatti products benefit from our ‘soft’ approach to programmable logic that allows new software to be loaded from a dCS update disc to add new features and adapt to changes in digital formats.
Class 1 Master Clock.
44.1, 48, 88.2 & 96kHz.
Silver or Black.
465mm/18.3” x 405mm/16.0” x 75mm/3.0”. Allow extra depth for cable connectors
Better than +/-1ppm when shipped (guaranteed for 12 months from shipping). Typically +/-0.1ppm when shipped and stabilised.
External Reference Input on 1x 75Ω BNC connector. Accepts Word Clock (with the Coupling menu page set to TTL) or AC coupled signals (with the Coupling menu page set to Bipolar) at 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 1MHz, 5MHz & 10MHz. Lock range is +/-300ppm.
1 x USB 2.0 interface on Type B connector. Accepts uncompressed audio data at 32, 44.1, 48, 88.2, 96, 176.4 & 192kS/s plus DOP.
6x Word Clock outputs, independently buffered, may be set to 44.1, 48, 88.2 or 96kHz*. 2x SPDIF on 1x RCA Phono and 1x BNC, carry data from the USB input.
Typically 1 minute to rated accuracy.
Tested on Windows XP/Vista/7 and Mac OSX. Operates in “Audio Class” mode. Class 1 mode (limited to 96kS/s) is available and does not require special drivers to be installed. Class 2 mode requires the dCS drivers (supplied) to be installed on Windows PCs. Not required on OSX 10.6.3 or later.
Packetised PCM at 32, 44.1, 48, 88.2, 176.4 & 192kS/s.
Loaded from CD via Reference Input or PC via USB input.
Nevo Q50™ programmable remote control is supplied with the Transport, or RS232.
Factory set for 100, 115, 220 or 230V AC, 49-62Hz.
8 Watts typical/12 Watts maximum
The Absolute Sound Issue 183, July 2008
Review by Jonathan ValinDownload
Compatible with Windows 10 / 8.1 / 7.Download
Software v2.0x. This applies to units with serial numbers starting with SCP.Download
Last updated 11 Feb 2016.Download