Chord Qutest Manual

Chord Modtager Qutest

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Side 1/2
General operation,
and specifications
4.0
Chord Electronics
Qutest | Manual
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Chord Electronics
Product Communication | English
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The Pumphouse Farleigh Lane,
East Farleigh, Maidstone
ME16 9NB United Kingdon
info@chordelec tronics.co.uk
chordelectronics.co.uk
Qutest
Manual
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V.2.0
Tap length WTA1 16FS filter 49,152 taps
Elements 10 Element Pulse Array Design
Frequency response 20Hz - 20kHz +/- 0.2dB
Dynamic range 124dB A-Weighted
THD 0.0001% 1kHz 2.5v RMS 300Ω
Channel separation 138dB at 1kHz 300Ω
Noise floor modulation None measurable
Dimensions 41mm (H) x 160mm (W) x 72mm (D
Weight 770g
chordelectronics.co.uk
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Drivers
Qutest is compatible with a wide variety of devices, including Mac OS
X, Windows, Linux, iOS and Android systems. Drivers are required for
Windows-based operating systems and these can be located on the
product page on the Chord Electronics website: chordelectronics.co.uk
Start-up sequence
Upon connection to power, Qutest will perform a start-up sequence evident
by the internal sample rate indicator cycling through a series of rainbow
colours. This will take approximately 16 seconds. During this time, Qutest
may not be discoverable, or output any audio. As mentioned, Qutest
automatically remembers last-used settings including Filter, Input, and Line
Level selection.
NOTE: When the correct input is selected on Qutest and the device
successfully detects an incoming signal the sample rate indicator will
illuminate (located within the viewing porthole).
Galvanic isolation
Galvanic isolation involves isolating the power rails of the data USB input,
allowing for greater sonic performance. Qutest features a Class 2 Type-B
USB input with this protection. No special attention or cables are required
to allow Qutest to function.
NO SOUND? Make sure that you have correctly selected Qutest as the
digital audio output on your machine. When plugging Qutest into your
computer, Qutest may not immediately or automatically be selected. For
more help please visit: chordelectronics.co.uk/get-support
Qutest must be connected to a device capable of attenuating its output
before being used. Connecting Qutest directly to a power amplifier can
cause irreparable damage to your equipment and your hearing.
If you require any help or advice, we first recommend contacting your
original dealer. They will have the best understanding of your system
and will be able to oer you bespoke advice. If you require further
assistance please visit the support page of the Chord Electronics website:
chordelectronics.co.uk/get-support
Specifications
HD Type-B USB
Up to 768kHz and DSD 512 native
playback. DSD 64 - DSD 256 via
DoP, native DSD via ASIO
COAX 2
Up to 384kHz and up to DSD 128
(via DoP). Dual-data* capable
COAX 1
Up to 384kHz and up to DSD 128
(via DoP). Dual-data* capable
Optical input
Up to 192kHz and DSD 64 (via DoP)
Qutest has two selector spheres on the front of the unit, FILTER and INPUT.
Each button also has an additional function - variable line-level output
mode and variable display brightness. Please refer to the sections below to
learn more.
Filters
By cycling through the four filter options, it is possible to subtly change the
device’s tonal characteristics. Qutest achieves this not by strictly applying
an equalisation curve, but by changing the way in which the FPGA handles
the data.
Rear
Front
Power connection
Qutest is supplied with an external power supply and has been designed to
be permanently connected to a power source. A 5V 2.1-amp Micro USB cable
and power supply is supplied. Note: Qutest cannot be powered via the USB
Type-B input.
Introduction
Welcome to Qutest, an advanced ultra-compact FPGA digital-to-analogue
converter proudly developed and manufactured by Chord Electronics in
Kent, England. Please take a few moments to familiarise yourself with
its operation.
Variable line level output
Qutest has a three-stage variable output voltage feature (1V, 2V and 3V)
enabling compatibility with a wide range of partnering amplifiers and
pre-amps.
Setting the brightness of the LEDs
To adjust the brightness level (after Qutest has finished the start-up
sequence), again, press both ‘FILTER’ and ‘INPUT’ to cycle between ‘High
and ‘Low’ modes. This will dim both the internal and external LEDs.
How to read sample rate
Qutest is fully future-proof with 768kHz PCM support, DSD up to 256 via
DoP (Mac) and native DSD up to DSD 512 playback (via ASIO driver for
Windows). Sample rate switching is fully automatic, intuitively triggered
by your device, playback application or computer. You can identify the
incoming sample rate by observing the colour displayed in the viewing
porthole and referencing it to the guide below:
Sample frequencies in kHz
Inputs
With four selectable digital input options, Qutest is a standalone DAC that
acts as a digital hub to allow audio components to be instantly upgraded.
Many hi-fi and audio components can benefit, including CD transports and
players, streamers, computers, laptops, tablets and smartphones, plus most
audio devices with a suitable digital output.
*M-Scaler compatibility: Using dual data, Qutest can accept an upsampled signal from a Chord
Electronics M-Scaler. To do so, connect the Dual-Data BNC outputs 1&2 of M-Scaler, to input BNC’s
1&2 of Qutest. Now ensure your M-Scaler OP SR button is set to MAX (white) and your Qutest input
is set to COAX 1 (yellow). The Qutest now will auto-detect dual data and switch into this mode.
Selectable options and
variable line level
Variable line level output
and how to read sample rate
2.0 3.0
Filter selection switch - 4x
filters available
Input selector switch
Micro USB power
supply input -
5V 1-amp minimum
RCA analogue outputs
(Left and Right)
2x BNC coaxial input -
24-bit/384kHz/Dual-data
mode capable to 768kHz
Optical input:
24-bit/192kHz DSD 64
USB Type-B input:
32-bit 768kHz
PCM/up to DSD 512
MEMORY FUNCTION:
Qutest remembers the last-used setting, including filter, input and variable voltage selection.
During start-up (the first 16 seconds), simultaneously press both
‘FILTER’ and ‘INPUT’ buttons
44.1kHz to 768kHz - 16-bit to 32-bit
Automatic sample rate switching
DSD up to DSD 256 via DoP,
native DSD up to DSD 512 via
ASIO driver
* Native DSD playback is only available via Windows OS
with the driver available from the Chord Electronics website.
General operation, and
important information
1.0
Incisive neutral HF roll-o
Designed for purists in mind, who
playback high sample rate PCM
recordings, this option has an ultra
linear frequency response with a
high frequency filter past 20kHz to
remove HF distortion and noise from
these recordings. This includes a
16FS to 256FS WTA2 filter with the
HF filter enabled.
Warm HF roll-o
Designed to introduce a little warmth
to recordings, this filter will satisfy
and is ideal for high resolution PCM
playback. This is a 16FS filter but
with a high-frequency roll-o.
1V RMS 2V RMS 3V RMS
Incisive neutral
Designed for all who wish to hear
the full spectrum of audio no matter
what sample rate, this option has an
ultra linear frequency response. For
the technically minded this includes
a 16FS to 256FS WTA2 filter.
Warm
Designed to introduce a
little warmth to recordings, this filter
will satisfy. This is a 16FS WTA1
filter only.
1
Release press and repeat the duplicate press again to reach the desired
output level ranging from 1V, 2V and 3V. Once the start-up sequence
has completed, the output level will be fixed. Repeat the steps above to
change the level.
2
Viewing Glass
44.1 48 88.2 96 176.4 192 352.8 384 705.6 768 DSD
Chord Electronics
Qutest | Manual
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Produkt Specifikationer

Mærke: Chord
Kategori: Modtager
Model: Qutest

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