Welcome to the dCS Knowledge Base. You can either browse the Knowledge Base by category or search for content using the search field at the bottom of the page (please use keywords rather than sentences to search).

Is there a dCS-recommended cable kit?

No. We have looked into this possibility before, but each time the practical problems of supplying such a kit world-wide prove insoluble. Please ask your dealer for cable recommendations.

Using JRiver for Mac OSX, why does my dCS system report 16 bit data?

JRiver for Mac appears to use the maximum word-length setting in the OSX CoreAudio system. Open the Audio MIDI Setup page and set the Output Format for the dCS device to “2ch – 24bit Integer” to correct this.

The Sleep and OFF buttons on my dCS remote do not work.

Hold down the Sleep button for about 2 seconds to set a dCS unit or a full stack to Sleep mode, then press the OFF button briefly if you want to switch off completely. This helps to prevent the system being set to Sleep mode or turned off by accident.

My new dCS remote did not work on receipt.

The most common cause of this is inserting the batteries the wrong way around. Press the flat (negative) end of each battery against the spiral spring and push the battery into the holder. You will find a picture of the correct battery orientation in the manual.

What is the difference in accuracy between a Rubidium atomic clock and a dCS Master Clock?

Rubidium Clocks are typically accurate to 0.1 parts per billion in the medium term (about 1000 times more accurate than a dCS Master Clock) but they generate some short-term jitter due to the way they operate. Our opinion is that stability (i.e. low jitter) is much more important than extreme accuracy, so we have steered our Master Clock development in that direction.

How do I add an atomic clock to my dCS system?

You can improve the accuracy of the timing in your system by slaving dCS Master Clocks (Vivaldi, Scarlatti, Paganini Plus) to the 10MHz output from a Rubidium reference generator.
To do this, connect the 10MHz output to the Master Clock’s Reference Input and set the Coupling menu page to AC. The Master Clock will take a few seconds to lock and then will display the “locked” icon.
Listening tests have shown that a dCS Master Clock is very effective at reducing atomic clock jitter and the combination gives improved sonic performance.

How can I turn off the Filter in the DAC or Upsampler?

The short answer is you cannot and you would not like the result if you could!
The dCS Ring DAC (TM) is an oversampling design, filtering is necessary to remove aliases produced by the oversampling process and Nyquist images produced by the conversion to analogue. These artefacts appear as mirror images of the audio band at higher frequencies, they cause unpleasant intermodulation effects if they are not removed. The digital conversion in the Upsampler generates aliases also, so these must be filtered out for the same reason.

How do I use the Dual AES DSD interface in a full Scarlatti / Paganini system?

If your system does not include an Upsampler, set the Transport to Vivaldi Mode and connect the Dual AES out to the DAC.
The Scarlatti & Paganini DACs have only one Dual AES input, so you will need to decide which source is most important to you when setting up a full system.
– If your priority is SACD, use Dual AES from the Transport with Vivaldi Mode tuned on. For CD playback, use 1394 from the Upsampler.
– If your priority is CD, use Dual AES from the Upsampler. For SACD playback, use 1394 from the Transport.
In both cases, make sure the system is correctly clocked.

How can I arrange service for the Pronto or Nevo remote supplied with my Scarlatti Transport?

At present, we can arrange servicing through the UK companies that originally supplied the remote to us. Please contact us stating the model, the remote serial number, the serial number of the dCS product with which it was purchased and a full description of the fault. Please do not return the unit to us until we have given you a returns number. dCS acts as an intermediary only, any warranty for the repair (parts and labour only) is provided by the servicing company.

What can I do if Windows XP reports “Unknown Device” when I connect a different dCS USB device to the PC?

This is a bug specific to Windows XP, it can occur if the PC is connected to a different model to that used for the driver installation. Either re-install the driver or follow these steps:
– Go to Start > Control Panel > System > Hardware > Device Manager.
– Under “Sound, Video & Game Controllers”, find the “USB Audio Device” with an exclamation mark (!) next to it. Right-click on it, choose “Update Driver”.
– Select “No, not this time”, click Next.
– Select “Install from a list or specific location”, click Next.
– Select “Don’t search. I will choose the driver to install”, click Next.
– Select the dCS driver from the list, click Next.
– A “Hardware Installation” warning window will pop up, click “Continue anyway”.
– Another Hardware Update Wizard will appear. Choose “No, not this time” then “Install the software automatically”. – Click “Continue anyway” when asked.
This long sequence makes sense when you actually do it!

Why did you not respond to my email?

We aim to respond to ALL email or website enquiries within 2 working days. We do not deliberately ignore any genuine enquiries. Very occasionally, we receive an enquiry that states an invalid email address or we find our response bounces. In such cases, we will try to follow up by phone or post if possible. If we do not have usable contact details, we have no way to respond!

Which Filter settings do you recommend?

This is very hard to answer. The sound presentation for each Filter depends on the type of music being played, how it was recorded, the amplifier, the loudspeakers, the room and – most importantly – the preferences of the listener. The manuals contain SUGGESTIONS for Filter settings, but they are no more than that. Filter settings really are a personal choice.

Can I rename the DAC and Upsampler inputs to something more useful?

The Vivaldi DAC and Upsampler’s inputs can be given a name with up to 8 letters or numbers. You will need a computer with a USB port, a USB-RS232 adapter cable and a terminal program such as TeraTerm or PuTTY. Please see the manuals for detailed instructions.

How can I get the upsampling license code for my Puccini Player?

The license code is supplied free to the original owner of Puccini Players shipped from dCS from 1st April 2009 onwards when we receive the warranty registration.

For subsequent owners or for Players shipped before this date, there is a charge of GBP 350 (+ 20% tax in the EU). Contact us, stating your name, address, the Player’s serial number and the date you bought it. The code is keyed to the serial number. We aim to respond within 2 working days.

Playing DSD files from a NAS drive running Minimserver, why does the sound drop out periodically?

This can happen if you play a DSD file and then (at some point) change the frequency of the clock to which the Upsampler’s Network interface is locked. As the Network interface is asynchronous, this change seems to throw Minimserver’s DoP packaging routine out of sync. The solution is to re-boot the NAS drive. If you want to experiment with different clock frequencies, we suggest that you disconnect the Network cable from the Upsampler first.

Can I play DSD/64 DFF or DSF files over the network to the Vivaldi Upsampler?

Yes, provided the server software packages the DSD data in DoP format. Minimserver and JRiver Media Center work well. Vivaldi does not support DSD/128 playback at present.

Can I use a Linux PC or a Linux-based server with your USB products?

We test our products thoroughly with Windows and Mac OSX, but only briefly with Linux Ubuntu. As Linux is open-source, it tends not to be as thoroughly tested as commercial operating systems, so we cannot offer support if you encounter problems. Linux natively supports USB Audio Class 1 and 2, so there is no need for a special Linux driver.

Can I use a different UPnP control point App to send music to the Vivaldi Upsampler?

Yes, in principle you can use any UPnP control point App. Note that the remote control features (e.g. DAC volume control) are available only from the dCS App. We cannot accept responsibility for other manufacturer’s software, of course.

My satellite receiver has a Toslink optical output only. How can I connect it to my dCS system?

Debussy, Puccini and Paganini do not feature Toslink inputs, but adapters are widely available. Please consult your dealer or search online for “toslink to spdif converter”.

Why do the displays of my Vivaldi units refresh themselves every 10 to 20 seconds?

On Vivaldi systems, this can happen if there is a set-up error in the clocking system, generally either

(1) locking the DAC/Upsampler to the Master clock but not the Transport or other source or

(2) locking the source device to the Master Clock but running the DAC in Master Sync Mode.

The Sync Mode icon on the displays should help you find the error. Please correct the clock connections or the DAC/Upsampler’s Sync Mode settings.

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