Chord Electronics Qutest DAC
Qutest is the latest evolution of Chord Electronics’ most affordable standalone DAC, the multi-award-winning 2Qute, which it directly replaces. Qutest is uniquely equipped to bring the benefits of Chord Electronics’ acclaimed proprietary hardware and software technology to a wide range of connected devices. It features a galvanically isolated USB-B, optical and dual coaxial digital inputs, giving an instant upgrade to everyday audio devices plus the ability to modernise ageing digital source components. It also features RCA analogue outputs for connection to integrated amplifiers, preamps and headphone amps, plus high-resolution 768kHz-capable dual-data digital inputs for connection to Chord Electronics’ devices including the 705/768kHz-ready M-Scaler-technology BLU MKII digital/CD transport.
Qutest has been designed for static use within home audio and desktop hi-fi systems. The new design benefits from 5V Micro USB powering which offers improved flexibility over its predecessor. Qutest offers support for up to 32-bit/768kHz PCM and DSD512 via its galvanically isolated USB-B input, 24-bit/384kHz PCM and DSD128 via coaxial (BNC) and 24-bit/192kHz data on Optical TOSLink. DSD 64 to DSD 256 is supported via DoP and ASIO native DSD format is also supported up to 512.
The device features a Class 2 USB input which, because of the Qutest’s home-system orientation compared to Hugo 2’s more mobile aspirations, has been galvanically isolated. This has been achieved using a novel technique which allows for very high data rates of up to 768kHz; the input is driverless on Apple and Android devices, with (ASIO included) drivers for Windows devices.
The Qutest chassis is all-new. It has significantly greater mass than its predecessor and has been precision-machined from solid aircraft-grade aluminium billet. The Qutest PCB nestles within a shallow cavity in the solid aluminium chassis, giving the circuit board greater protection within the casework and additional isolation from external vibration compared to previous designs.
Performance gains have been made in timing accuracy, noise reduction and dynamic range and tap length, the technical indicator of how complex the interpolation filter is, has more than doubled compared to its predecessor, to 49,152.A four-function switch filter, operated by its own control sphere, offers a useful degree of user-selectable frequency-shaping, bringing warm and soft or transparent and incisive presentations, giving additional flexibility and user control.
Frequency response: 20-20 kHz +/- 0.2dB
Tap-length: 49,152
Dynamic range 124 dB AWt
THD: 0.0001% 1 kHz 2.5V RMS 300 ohms
THD and noise at 2.5v RMS ref 3V: -117dB 300 ohms AWt
Channel sep 138 dB at 1kHz 300 ohms
Galvanically isolated USB
No measurable noise floor modulation
Inputs:
1x Optical TOSLink 24-bit/192kHz-capable
2x BNC coaxial input 24-bit/384kHz-capable (dual data mode up to 768kHz for M-Scaler operation)
1x HD galvanically isolated USB-B input 32-bit/768kHz and DSD512-capable
Outputs:
1x (pair) stereo RCA phono outputs: 1, 2 and 3V RMS