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Cyrus CDt-XR Reference CD Transport & PSU-XR Power Supply - Bundle Price
Cyrus CDt-XR Reference CD Transport
The CDt-XR is designed as a reference CD transport, building on the legacy of the CDt and the CD XT Signature models, but incorporating many novel technologies developed in-house at Cyrus over recent years. Housed within our iconic half-width chassis, The CDt-XR sits above the existing CDi and CDt models, offering a substantive performance upgrade. Listeners will notice a dramatic lowering of the noise floor, bringing enhanced clarity and nuanced detail, brought about through significant design improvements in many areas, yet the characteristic ‘Cyrus-sound’ has been retained.
TRANSPORT / SERVO
Several years ago, Cyrus invested heavily in developing our own in-house CD ‘Servo’ mechanism, our ‘Servo Evolution’. The design principle is to read as much information as possible from the disc itself first time, rather than having to rely on ‘re-reads’ or ‘error-correction’.
Whilst it is true that the data on a CDs is stored in ‘1s and 0s’, the way it is read, using picking up different frequencies of reflected light, has analogue elements to it. Therefore, precision engineering can improve the performance. Off-the-shelf mechanisms produce significant ‘system noise’ when the stepper motors of the mechanism are required to be used during the error correction processes when the data was not picked up on the first pass. Our ‘Servo-Evolution’ system reduces these re-reads and corrections by around 20%, producing not only a cleaner data stream, but significantly less noise.
INTERNAL POWER SUPPLY
The CDt-XR, like all products in the XR series, has had a complete overhaul of the power supplies to each circuit section. The power supplies are much stiffer and have enabled the Cyrus engineers to the get the remarkable SE engine to run even more quietly.
CONTAINING NOISE.
Upgraded components along with intelligently designed circuits using ‘counter-current’ methodologies to reduce noise pickup are in evidence throughout the design.
The fundamental principle is that power starts at the ‘quietest’ part of the circuit, before flowing towards the ‘noiser’ sections. Less noise is therefore ‘carried’ or induced into the power paths, limiting the transmission of noise inside the product. Whilst this sounds logical, the application in practice is incredibly complex, and needs to be considered at a system-wide level. Even the geometric alignment of individual components has been optimized to facilitate the cleanest possible flow of power and musical signal.
SPECIAL CONSIDERATIONS
A key improvement in the CDt-XR is the re-clocking of the digital signal just before it exits the case. Although noise and timing accuracy are both carefully managed throughout the circuit, this final re-clocking ensures the absolute purity of the outbound digital signal through both the optical and coaxial connections.
It’s worth noting that whilst an integrated CD player offers exceptional value and, although the CDi-XR is as close to ideal as technology reasonably allows, the presence of a DAC circuit in the same case, means the sound can never be as ‘absolutely’ clean as that from a dedicated transport. That, coupled with the fact that the integrated and pre-amplifiers in the XR series, all have pristine on-board Gen 2 QXR DACs, means the CDt-XR is, when used with a complete Cyrus system, the connoisseur’s choice
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Cyrus PSU-XR Power Supply
The PSU-XR builds upon our extensive legacy in Power Supply design. Beginning with the original PSX, Cyrus has always led the field in producing clean, stable and ‘stiff’ external upgrade power supplies. ‘Stiffness’ is essential, Even when heavy loads are applied, the voltage has to remain completely stable. The PSU-XR employs the largest toroidal transformer we have ever used, coupled with some amazingly efficient load management circuits to deliver a staggering amount of power.
THREE DIFFERENT SUPPLIES
Able to deliver ‘exact’ power requirements to three different circuits on the host product, the PSU-XR significantly enhances the performance of any XR product it is used with. Advanced, microprocessor controls, relay switching, completely separated ‘Grounds’ to virtually eliminate the transfer of ‘noise’ and a future-proof architecture are just some of the special features of this upgrade power supply.
DIGITALLY ADDRESSED VOLTAGES
The PSU-XR communicates with the host-product via the 15pin bus lead to determine the exact voltage requirements of the various circuits to receive the additional power. The PSU-XR then controls the output voltage using an 8-bit digital gate, allowing 256 different (and precise) voltage steps for the output rails.
NO SHARED 'GROUND'
The PSU-XR is able to supply three different circuits in the host product with power. In order to preserve the purity of the power to each of these circuits, the different power sections of the PSU-XR have completely separate ‘grounds’. This virtually eliminates the possibility of system ‘noise’ from one section of the host product being transferred to another section.