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Cyrus qxr upgrade.

Habu

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Cyrus QXR DAC Module Features:
  • Can be fitted to both Cyrus integrated amplifiers and Cyrus preamplifiers
  • High-specification 32-bit/768k ESS DAC
  • Asynchronous USB port
  • Improved headphone amplifier

Cyrus QXR: new DA converter for existing amplifiers

The new QXR DAC card not only improves the performance of the line outputs but also improves the performance of the built-in headphone amplifier. The card is available for a large number of Cyrus products.
The QXR card is capable of processing PCM signal up to a resolution of 32-bit / 768 kHz 'Native' DSD 512 via the USB input. The high-specification ESS DAC chip uses asynchronous upsampling. Even through the optical and coaxial inputs where the signal comes in at a lower resolution, the signal is clocked again to reduce any noisy jitter. The improved headphone amplifier, associated with the upgrade, has a lower noise floor and with 138 mWatt per channel at an impedance of 16 Ohm is able to control almost all common headphones to an impedance of 64 Ohm.

Cyrus QXR upgrade: for which devices? At what price?

The QXR upgrade will cost £600 in the UK and is compatible with: 8₂ DAC Qx, 8₂ DAC , 8 DAC Qx, 8 DAC, 8a, 6 DAC, 6a, Pre₂ DAC Qx, Pre₂ DAC, Pre DAC Qx, Pre DAC.

Product Overview

The QXR card upgrade is the most significant improvement to Cyrus amplifiers in recent years. Bringing a world of the highest-resolution digital inputs to products up to a decade old.
QXR works with numerous Cyrus products, not only improving the sonic performance through the addition of a 32bit/768k DAC and all-new asynchronous USB bridge but also substantially improving the performance of the headphone amplifier section of these integrated and pre-amplifiers.

Further Information

The new QXR DAC card can be fitted to the existing Cyrus integrated amplifiers and preamplifiers. The five digital inputs include 2 x optical, 2 x SpDIFF and a USB input.
The QXR DAC card is capable of processing PCM audio to 768k at a 32bit depth and ‘Native’ DSD 512, through the USB input. The high-specification ESS DAC uses asynchronous upsampling to deliver a sublime audio signal regardless of source. Even via the lower resolution digital S/PDIF and Toslink interfaces, incoming signals are ‘reclocked’ to substantially reduce noisy ‘jitter’ and deliver a refined, cleaner audio signal to the pre-amplifier stages of the upgraded product.
cyrus_qxr_dac_module%205%20small.jpg
The improved headphone amplifier, included within the upgrade, reduces the noise floor, providing a much improved dynamic range. Capable of outputting 138mW per channel into 16ohm loads, it can comfortably drive headphones with impedances of up to 64ohm.

Technical Information

Inputs: 2 electrical SPDIF, 2 optical SPDIF, 1 USB
SPDIF supported formats 16/44.1k - 24/192k
USB supported formats 16/44.1k - 32/768k
DSD supported formats up to DSD512
DOP supported formats up to DOP128
Outputs: 1 analogue output (internal), headphones (minijack)

Upgrade available for the following Cyrus models

Integrated amplifiers: 8₂ DAC Qx, 8₂ DAC , 8 DAC Qx, 8 DAC, 8a, 6 DAC, 6a
Preamplifiers: Pre₂ DAC Qx, Pre₂ DAC, Pre DAC Qx, Pre DAC
 

M00ndancer

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Should I be impressed? Not when he states that digital signals are noisy.
 

Habu

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Hello from France,

Yes, you should be impressed by the price.... 600£ or 792$.
But you can afford it if all your equipments are branded Cyrus, eventually in a nice Hark Rack model I (like a sound totem), and you want to upgrade the Dac part.
Otherwise, I don't think anybody will be impressed by this DAC as a separate, especially here.

IMG_2187.JPG

Three budgets, three systems. (And also different price category for each component). If you have a Cyrus rack, you are trapped. The Cyrus audiophile game is also to upgrade the system, component after component, to add separate power supply, new cables ;)

Sincerely yours

Habu
 
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Killingbeans

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Wow, that rack makes it look like a piece of hospital equipment :D

What's the point of this thread?

To make fun of the fact that PCM 32-bit/768k and DSD 512 seems to be the only quality stamp needed?
 

Habu

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What's the point of this thread?

The point of this thread is maybe like many others, a "stone soup" in ASR village, everybody brings something they think is missing.....

The stone soup:
Some travelers come to a village, carrying nothing more than an empty cooking pot. Upon their arrival, the villagers are unwilling to share any of their food stores with the hungry travelers. Then the travelers go to a stream and fill the pot with water, drop a large stone in it, and place it over a fire. One of the villagers becomes curious and asks what they are doing. The travelers answer that they are making "stone soup", which tastes wonderful and which they would be delighted to share with the villager, although it still needs a little bit of garnish, which they are missing, to improve the flavor.
The villager, who anticipates enjoying a share of the soup, does not mind parting with a few carrots, so these are added to the soup. Another villager walks by, inquiring about the pot, and the travelers again mention their stone soup which has not yet reached its full potential. The villager hands them a little bit of seasoning. More and more villagers walk by, each adding another ingredient. Finally, the stone (being inedible) is removed from the pot, and a delicious and nourishing pot of soup is enjoyed by travelers and villagers alike. Although the travelers have thus tricked the villagers into sharing their food with them, they have successfully transformed it into a tasty meal which they share with the donors.


Sincerely yours,
Habu
 
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M00ndancer

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Yes, you should be impressed by the price.... 600£ or 792$.
But you can afford it if all your equipments are branded Cyrus, eventually in a nice Hark Rack model I (like a sound totem), and you want to upgrade the Dac part.
Otherwise, I don't think anybody will be impressed by this DAC as a separate, especially here.


Only one word: Meh...
Not even properly designed. Unless you can get the product to @amirm for test I can't really see the point of this tread.
 

restorer-john

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Let's get serious. £600 in the UK for a circuit board with a BOM of maybe 10% of that. Hardly good value, in fact I'd call it utter theft.
 
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