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Rossini Clock

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The new dCS Rossini range makes superlative sounding music from a wide range of digital sources, simply integrating your digital music and setting the performance standard for digital playback.

Rossini Master Clock is a simple to use Grade 1 master clock, based on our pioneering developments in studio and home audio. Featuring three separate clock outputs capable of outputting different frequencies, Rossini Master Clock allows Rossini DAC or Player users to benefit from the auto clocking mode in Rossini and optimise audio from various digital sources in a simple, fuss free way.

In a digital audio system, samples must be accurately transferred at the correct time. Instability in the sample timing is called jitter – this exists in all digital systems. Severe jitter results in timing errors in the delivery of data to the DAC, causing the analogue signal to be reconstructed inaccurately.

In a dCS system, the DAC can act as the system master clock, but listening tests have shown that there is no substitute for a high quality, dedicated master clock.

dCS pioneered the use of external clocks in digital audio systems. Our clocking technology has been continually refined so that our latest multi-stage Phase-Locked- Loop (PLL) system sets world-beating standards for accuracy and control of troublesome jitter from the incoming audio stream.

All dCS Master Clocks are subjected to rigorous in-house testing. The crystal oscillators are pre-aged, selected for long term stability and then individually calibrated over a wide temperature range to ensure consistent optimal performance. Rossini Master Clock uses a sophisticated microcontroller system to ensure smooth frequency correction as the temperature changes, and this approach gives a more stable result than either oven-controlled crystal oscillators or even atomic clocks.

All dCS Master Clocks are designed to generate industry-standard Word Clock over a 75 ohm coaxial cable. Other manufacturers’ equipment that has been designed to accept standard Word Clock can be used with our clocks.

When listening to digital music through a Rossini system, Rossini Master Clock improves on an already spectacular sound and takes it into an entirely new domain. Listeners are immediately struck by its natural musicality and faithfulness to the original recording. It delivers a powerful and visceral sound yet is highly transparent too, making for an immersive and realistic listening experience.

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.


Technical Specifications

  • type

    Class 1 Master Clock.

  • clock frequencies

    44.1kHz 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


  • 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 I/Oworldclock inputs

    3 independently buffered outputs on 75Ω BNC connectors. Output 1: fixed at 44.1kHz Output 2: fixed at 48kHz Output 3: 44.1kHz, RS232 controllable.

  • 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.


  • image 1

    The Speaker Shack – dCS Rossini Player and Clock

    Read full article here

  • image 1

    HiFi+ Rossini MQA Update 2018

    Review by Chris Thomas

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    Audio Gallery – dCS Rossini Player and Clock

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    Audio Esoterica – Rossini Player and Rossini Clock

    Review by Edgar Kramer

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    Stereophile Magazine – dCS Rossini Player & Rossini Clock

    Review by John Aitkinson

  • image 1

    dCS Rossini – HiFi i Muzyka Poland

    Review of dCS Rossini CD Player by Paweł Gołębiewski in Źródło: HFM 06/2016.

    Read the full review.

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    HiFi Critic – dCS Rossini Player and Clock

    Review by Chris Binns

    HiFi Critic April – June 2016

    ‘A performance that allows the listener to get deeply involved with the music, and more directly connects to the heart and soul with little or no effort. The Rossini excels in creating a sense of believable musical realism, and that is far closer to where I would like digital audio reproduction to be.’


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    Raising the Bar – dCS Rossini

    Review by Jeff Dorgay

    Tone Audio #77

    The sutle growl in Plastikman’s “Mind Encode”
    rolls out into my listening room in such a sinister,
    encompassing way, it’s almost frightening. It
    instantly reminds me of the aural magic that its
    much more expensive sibling, the four box Vivaldi,
    which until now was the only digital playback
    system capable of being this visceral.

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    dCS Rossini Player and Clock – HiFi Critic

    Review by Chris Binns

    HiFi Critic

    April  2016

    ‘The Rossini excels in creating a sense of believable musical realism, and that is far closer to where I would like digital audio reproduction to be.’


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    Vivaldi y Rossini: de nuevo la magia de dCS

    Pocas marcas han sabido hilar tan fino a la hora de dotar de “alma” al audio digital doméstico
    como la británica dCS. ¿El motivo? Un dominio de la tecnología “pro” más avanzada cuya expresión
    más reciente la encontramos en el modelo Rossini, presentado en sociedad en el icónico loft de la
    barcelonesa Werner.

    Por Salvador Dangla

    AV Premium

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    dCS Rossini DAC and Clock

    by Michael Lavorgna, Audiostream

    “The dCS Rossini DAC and Clock are capable of exploding the listening experience into a fabulous psychedelic adventure constrained only by imagination and time. ”

    Read the complete review

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    dCS Rossini Player – đầu đọc hi-end chuẩn tham chiếu


    Review by TIET TUAN LUONG (MR.)

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    dCS Rossini Player and Clock

    Review of dCS Rossini Streaming CD Player and Master Clock

    “The dCS Rossini sets a high standard for digital audio of all kinds today. You may find ‘different’ but you won’t find ‘better’ at anything even close to this level.”

    Alan Sircom, Editor

    Read the online review



This is the support section for dCS Rossini Clock.   If you cannot find what you need please try the top menu Support section or Contact Us.

  • Mosaic 1.0.2 Release Notes

  • Mosaic 1.0.1 Release Notes

  • Menu Guide – Rossini Player / DAC V02

    Software v2.0x.

  • User Manual – Rossini Player V03

    Software v2.0x with network firmware 501 and Mosaic Control app.

  • User Manual – Rossini Transport v1.0x

  • User Manual – Rossini Clock v1.0x

    Software version 1.0x

  • Product Datasheet – Rossini Player

  • Product Datasheet – Rossini Clock

  • Product Datasheet – Rossini DAC

  • Remote Control Codes

    Last updated 11 Feb 2016.



  • The Absolute Sound – Editor’s Choice 2014

    CD Player of the Year 2016

    Apr 2016

  • The Absolute Sound – Editor’s Choice 2014

    Digital Player of the Year 2016

    Feb 2016

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