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Hi-Fi Disposals

Questyle CAS 192D DAC (Silver), NEW

Questyle CAS 192D DAC (Silver), NEW

Call us on 03 9882 0372 for more information or simply checkout online. Items covered under the HiFi Disposals warranty are serviced and guaranteed by Tivoli Hi-Fi.

Regular price $1,499.00 AUD
Regular price $2,999.00 AUD Sale price $1,499.00 AUD
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Questyle CAS 192D DAC (Silver), NEW

A fantastic combination of sound and digital technology!

True DSD

Unlike other DACs that claim DSD support yet actually provide DoP (DSD over PCM), the Questyle Audio CAS192D accepts the DSD bitstream directly from your computer. It bypasses your computer’s audio processing and digital volume control, as well as the Questyle Audio CAS192D’s digital filters, to provide True DSD, the way it was meant to be heard.

The Questyle Audio CAS192D achieves this without requiring expensive, challenging to install, proprietary connectors, or as is the case with DoP, breaking up the bit-stream into 16bit packets and compressing them into a PCM data-stream and then uncompressing them at the other end, buffering them, then reassembling the bit-stream so that it may be sent to the DAC as DSD. All of this requires an extreme amount of processing, at both the computer end and the DAC end, to perform in real time (which invariably leads to latency, data loss, etc), not to mention a 33% increase in bandwidth requirements for the USB ports and cabling.

IIR Digital Filter

Currently, most DACs use FIR (finite impulse response) digital filters. However, research and testing have shown that our ears are susceptible to the pre-ring that FIR digital filters add to the impulse wave, making the music sound incoherent and unnatural.

The Questyle Audio CAS192D offers the more advanced IIR digital filter, which eliminates the impulse wave's pre-ring and produces a more natural sound.

USB input supports True DSD and PCM 192kHz/24bit, with 3x clock asynchronous transmission structure

Hundreds of thousands of time operations occur during every second of music. Any micro errors will distort the sound.

In the Questyle Audio CAS192D, a 3x clock USB asynchronous transmission structure ensures more accurate operation. To obtain first-class sound performance, three corresponding-level clocks (custom-made in Japan) individually control multiples of 44.1kHz, 48kHz, and USB signal transmission dedicated to USB asynchronous transmission, reducing jitter to undetectable levels. A three-clock circuit is integrated with FIFO asynchronous architecture and three voltage-stabilised power stages to ensure accurate sound.

Dual clock integral up-sampling

When up-sampling, 44.1kHz does not divide evenly into 192kHz, causing timing errors. To avoid this, the CAS192D uses two clocks, with extremely low phase noise, thus the processor automatically identifies the sample rate and up-samples integrally. If the input data is 44.1kHz, it will be multiplied by 4 to 176.4kHz; if the input data is 48k, it will be multiplied by 4 to 192k, which avoids those negative effects. The up-sampling is ASRC to avoid jitter.

On the front panel of the Questyle Audio CAS192D, there is an UP-SAMPLING button to allow the user to choose whether to up-sample or decode at the original sample rate (the current operation state is displayed on the screen).

Specific power supply

The Questyle Audio CAS192D's power supply section is second to none. A customised Plitron toroidal transformer, Schottky rectifier, 22pcs Nichicon 2200uF FG capacitors, and 22 groups of individual power regulators ensure each section has a stable and purified power supply. The DAC chipset uses four levels of digital filter and power regulation. 

Sound Structure

Foxconn produces the Questyle Audio CAS192D aluminium chassis using precise CNC tooling machines. The upper cover and bottom chassis's “mutual bit” structural design provides stable heat, excellent sympathetic vibration control, and superb RFI/EMI radiation shielding.

Wolfson Flagship Chip WM8741

The sound of WM8741 can be described as classic "English"-style, delivering a soft and exquisite sound. Due to Questyle's high requirements for D/A design, LPF is discarded (per Wolfson’s suggestion) in the Questyle-developed analogue output circuit for the WM8741, receiving official praise from Wolfson.

"CAS192D……  has a sort of unforced clarity that allows me to enjoy it for hours without finding it too lit up… Once you hear all those details, all that air up top, with deeply carved images and superb localization, it's hard to return to an amorphous blob-like presentation… DSD on the CAS192D has a sense of ease that I find very easy to enjoy while maintaining a highly detailed sound. There's a realism to it, a three-dimensional presentation that goes beyond just soundstage, making it incredibly lifelike and immersive. This is among the best DSD playback I've ever heard."- -John Grandberg
USA Head-Fi Reviewer
https://www.head-fi.org/showcase/questyle-cas192d-dac.20154/reviews

Specification

 

 

DAC Chipset: WM8741
USB Input : PCM 44.1K-192K/16-24Bit , Native DSD64
Analog Output Amplitude: RCA 2.44Vrms, XLR 4.88Vrms
THD+N : < 0.005%
SNR: RCA 115dB, XLR 116dB
Standard Digital Input: USB, Coaxial, PCM 44.1K-192K /16-24Bit
PC OS Requirements: Win XP, Vista, Win 7, Win 8, and Mac OS
Media Player for USB Input: Any media player

Analog Output: XLR and RCA

Digital Filters in PCM Mode :
Five switchable filters between IIR and FIR filters
Digital Filters in DSD Mode: no filter
Upsampling in PCM Mode: dual clock integral upsampling, on/off switchable
Core Audio Stream Supported by USB: WASAPI, ASIO, KS


For condition details and/or additional pictures, please call 03 9882 0372 or email hello-info@hifidisposals.com.au. 

This product comes with a Warranty. Click here for warranty details.

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