Rossini Master Clock


The Rossini Grade 1 Master Clock offers world-leading levels of accuracy and jitter control. Paired with dCS Rossini electronics, it delivers an even greater sense of space, depth and musical realism.


ROSSINI APEX – The Visionary
Latest generation Rossini system combines state-of-the-art engineering with exquisite craftsmanship and a timeless aesthetic, delivering a performance that is equal parts detailed and expressive. Choose from an integrated Player or dedicated DAC, CD/SACD Transport and Clock for a unique experience that encapsulates the dCS singular approach to digital playback.

System Components:

Combining DAC, music streamer and CD transport, Rossini integrated player brings the most advanced dCS technology into a single, elegant design, providing a complete music system renowned for its precision, composure and musical purity.

Designed for both complete flexibility and unrivalled musical expression, the Rossini DAC features new Ring DAC APEX and signal processing platform plus a custom high performance UPnP music streamer.

The Rossini Grade 1 master clock offers world-leading levels of accuracy and jitter control. Paired with our Rossini electronics, it delivers an even greater sense of space, depth and musical realism.

CD/SACD Transport
Designed to deliver excellent performance in rigidity, vibration resistance and resonant-free operation, the Rossini Transport offers a stable and near-silent performance that extracts astonishing levels of detail from silver discs.

Rossini – the purest expression
Powerful and graceful too, the Rossini renders music with the utmost precision and care, delivering a fluid and natural sound without the slightest hint of harshness or glare. From the softest strings to the sharpest brass, and the quietest intake of breath, it unearths each aspect of a recording to reveal a performance that feels layered, lifelike and whole.

No matter how complex the music, it never loses its composure, or its sense of rhythm and flow, tracking even the swiftest shift in dynamics and pace with a sense of utter control. With its unshakable focus and astonishing insight, it presents a holographic view of a recording and the atmosphere and space in which a performance takes place.

Designed and hand-assembled at dCS headquarters in Cambridgeshire, the Rossini is born from meticulous craft, exhaustive development and an obsessive attention to detail – a relentless pursuit of musical purity that has inspired dCS to push the limits of sound reproduction.

Combining robust engineering with an elegant aesthetic, the Rossini is built to withstand even the most intensive use and deliver a truly immersive sound at all levels and outputs. With its flexible, future-proof design, it’s a system that can grow and evolve, delivering a state-of-the-art listening experience for years to come.

An esteemed cohort to the renowned Vivaldi system, it features proprietary Ring DAC system, digital processing platform, and clocking architecture – a combination of hardware and software that is unrivalled in its sonic and technical performance.

New for 2022, the Rossini APEX benefits from the latest generation dCS Ring DAC APEX hardware. This major upgrade brings a range of measured and sonic improvements, allowing us to further enhance the performance of this much-loved and multi-award-winning system, and provide an even richer experience for listeners.


Master Clock Key Features

  • Designed for maximum flexibility as output configuration can be optimised in systems with a wide variety of digital audio sources
  • Dual crystal oscillators with microcontroller-enhanced temperature correction
  • New dual frequency output and auto- clocking mode used in the Vivaldi and Rossini range improves ease of use and minimises jitter, particularly with computer audio sources
  • Multi-stage regulation ensures sensitive clock and PLL circuitry is unaffected by digital interference
  • Aerospace-grade machined aluminium chassis fitted with tuned acoustic damping panels reduces magnetic effects and vibration


Type: Class 1 Master Clock

Clock Frequencies: 44.1kkHz or 48kHz

Colour: Silver or Black

Dimensions: 444mm / 17.5” x 435mm / 17.2” x 64mm / 2.6“. Allow extra depth for cable connectors

Weight: 8.3kg/18.3lbs

Clock Accuracy: Better than +/-1ppm when shipped, over an ambient temperature range of 10°C to 30°C. Typically +/-0.1ppm when shipped and stabilised

Wordclock Outputs: 3 independently buffered outputs on 75Ω BNC Connectors. Output 1: fixed at 44.1kHz. Output 2: fixed at 48kHz. Output 3: 44.1kHz, switchable to 48kHz via RS232

Startup Time: Typically 1 minute to rated accuracy

Local Control: RS232 (limited to Power and Clock 3 output frequency)

Power Supply: Factory set to either 100, 115/120, 220 or 230/240V AC, 50-60Hz

Power Consumption: 3 Watts typical / 4 Watts maximum

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