Loxjie D40 PRO User manual

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without notice, please go to http://www.loxjie-audio.com/download.asp
Download the latest version of the manual. Ver 1.1
Instruction manual
D40 PRO

D40 PRO
Features
USB, optical, coaxial, AES all support MQA decoding function, and
support MQA-CD;
American ESS new generation flagship DAC chip ES9039MSPRO, built-in
MQA hard decoding;
New third generation XMOS XU-316, PCM support up to 32bit/768kHz,
DSD support up to DSD512;
The headphones AMP are designed with a fully balanced circuit and
have a very high power output and very low distortion；
Ultra-low phase noise and optimized clock processing circuitry are used
to achieve ultra-low clock jitter;
In addition to Bluetooth other input ports support DSD transmission,
coaxial, optical and AES/EBU support DoP64;
Firmware upgrade function, users can upgrade the firmware of system
and USB by themselves;
Built-in low-noise power supply processing, while improving power
efficiency, lower power consumption;
Specially designed discrete components linear voltage regulator and
multiple low-noise voltage regulator for analog circuits to provide
low-noise power supply;
Qualcomm's latest Bluetooth chip supports LDAC 24bit/96kHz ,APTX/HD
,SBC,AAC ;
High quality gold plated input and output connection terminals;
Japan Audio Society (JAS) Hi-Res certification;
Equipped with remote control and full function remote control.

D40 PRO
Specification
Interface：
Inputs USB / Optical / Coaxial / Bluetooth / I2S
Outputs RCA / XLR / balanced headphone x1
4.4mm headphone jack / unbalanced headphone x1
Output Level XLR 5.2Vrms
RCA 2.5Vrms
Output amplitude 6000mW x 2 (16Ω)
3000mW x 2 (32Ω)
700mW x 2 (300Ω)
350mW x 2 (600Ω)
Audio feature:
THD+N 0.00005% (-125dB) (UN-WTD)
Dynamic range XLR 133dB
RCA 128dB
HPA 125dB
SNR XLR 133dB
RCA 128dB
HPA 125dB
Output Amplitude XLR 5.2Vrms
RCA 2.5Vrms
Output Impedance XLR 100Ω
RCA Near 0Ω
Headphone AMP High Gain XLR +20dB
RCA +14dB

Specifications are subject to change without notice.
Audio specifications:
USB transmission Asynchronization
USB compatibility Windows 7 / 8 / 8.1 / 10 / 11, Mac OSX, Linux
MQA decoder USB/Optical/ Coaxial/AES
MQA-CD decoder
Windows 7 / 8 / 8.1 / 10 / 11, Mac OSX, Linux
Bit depth
USB 1bit，16~32bit
Optical / Coaxial / AES/EBU 1bit，16~24bit
Sampling rate
USB PCM 44.1~768kHz
DSD 2.8224~22.5792MHz
Optical / Coaxial / AES/EBU PCM 44.1~192kHz
DSD DSD64(DoP)
Bluetooth specification 5.0(support SBC,AAC,aptX,aptX HD,LDAC)
Others：
Power Consumption 5W
Standby power <0.5W
Size 240x43x195(WxHxD)
Weight 1.15kg / 2.53 Ibs
D40 PRO
Specification
Firmware and driver download: http://www.loxjie-audio.com/
Support

Remote control
D40 PRO
Note:
Power ON/OFF
Mute/Long press to BT reconnect
Menu/OK
Enter menu
Output select
Input switch(Short press to switch input
source/long press to switch to BT)
No function
Up/down select
menu
Volume +
Volume -
Digital filter switch
Exit menu
Screen off
If the operation does not work even when the remote control is very close to the unit, please
replace it with a new battery.
If you do not want to use the remote control for a long time, please remove the batteries of the
remote control.
Dispose of used batteries in accordance with local regulations for battery disposal.
Please use 2 AAA batteries for the remote control.
Remote control operating distance: 5-8 meters.
How to use Bluetooth:
1. Connection: switch the input source to Bluetooth, turn on the Bluetooth function
of the mobile phone, search "Loxjie D40 PRO", and click Connect after searching.
When the mobile phone displays "connected", the connection is successful.

Parts
D40 PRO
Switch button
PRESS to turn on/off;
HOLD to turn off the screen.
FN button
PRESS to switch filter mode.
Input selection button
PRESS to switch input source;
HOLD to switch directly to Bluetooth
Output selection button
PRESS to switch line/headphone;
HOLD to switch line output mode.
Display screen
Function knob
PRESS to enter the menu;
HOLD to exit the menu;
ROTATE to change the value or volume.
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4.4mm headphone jack
6.35mm headphone jack
Balanced headphone jack
RCA Output
Bluetooth antenna
XLR Output
AES/EBU input
I²S input (not HDMI compatible)
This interface only uses the HDMI
socket and cable, it is not an HDMI
interface and is not compatible with
HDMI devices!
Optical input
Coaxial input
USB input
Power input (100~240v AC)
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Function and operation instructions
D40 PRO
INPUT SETTING
USB AUDIO
OPTICAL
COAXIAL
AES/EBU
I2S
BLUETOOTH
OUTPUT SETTING
BALANCED
RCA
HEADPHONE
PCM FILTER
FILTER OFF
MINIMUM PHASE
APODIZING
LINEAR FAST
LINEAR SLOW
MINIMUM FAST
MINIMUM SLOW
LOW DISPERSION

DSD FILTER
47kHz Cutoff
50kHz Cutoff
60kHz Cutoff
70kHz Cutoff
GAIN
Low
HIGH

I2S DATA +
I2S DATA -
I2S LRCLK +
I2S LRCLK -
GND
NC
DSD FLAG
NC
GND
GND
GND
GND
I2S MCLK +
I2S MCLK -
NC
MUTE
NC
I2S BCK +
I2S BCK -
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GND
GND
I2S MCLK +
I2S MCLK -
NC
MUTE
NC
I2S BCK +
I2S BCK -
I2S DATA -
I2S DATA +
I2S LRCLK -
I2S LRCLK +
GND
NC
DSD FLAG
NC
GND
GND
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Function and operation instructions
D40 PRO
DPLL
dP0 ~ 9
(A total of 10 kinds, the default is 5 kinds. The larger the number is, the stronger the
range to adapt to jitter, and the smaller the number, the better the performance against
clock jitter.)
This DPLL setting is a special function of ESS series products. It can adjust the internal
DPLL digital phase locked loop circuit Bandwidth, so that the chip achieves a balance
between anti clock jitter and input tolerance.
Its function:
When the clock stability of the input signal is good, this value can be reduced,
so that the clock performance of the system is better;
When the clock stability of the input signal is not good, the sound may be interrupted.
Increase this value can avoid the sound interruption! Especially when using TV
as signal source!
Note: This option is used to match different I2S interface standards, please
check the interface definition of the signal source before use
I2S setting：
Normal phase, DSD is normal
Inverted phase, DSD is normal
NORMAL INVERTED

Function and operation instructions
D40 PRO
BRIGHTNESS
~
AUDIO PHASE：
NORMAL (2+,3-)
INVERTED (2-,3+)
1 2-
3+
1 2+
3-
NORMAL INVERTED

About MQA
D40 PRO
MQA (Master Quality Authenticated) is an award-winning British technology that delivers
the sound of the original master recording. The master MQA file is fully authenticated and
is small enough to stream or download. The D40 PRO includes MQA technology, which
enables you to playback MQA audio files and streams, delivering the sound of the original
master recording.
Visit How it works https://www.mqa.co.uk/how-it-works for more information.
How to play MQA
D40 PRO supports MQA decoding with USB, optical fiber, coaxial and AES/EBU!
D40 PRO's MQA playback does not require the use of special playback software, such
as foobar2000, Audirvanaplus only needs to support ASIO or WASAPI audio output,
and when playing MQA audio, it is best to adjust the volume of the computer to the
maximum,so that the audio output of the computer is in the best condition.
When playing an MQA file, the sampling rate of the original master recording is
displayed.
and the Sound Wave Device are registered trade marks of MQA Limited.© 2016
Notes on playing MQA-CD
Please make sure that what is being played is a genuine MQA-CD.
Verify that the optical or coaxial signal output of the CD player is an unprocessed
source code.

Power indicator
Power indicator, red when in standby, green when powered on and the display is off.
MQA
The MQA LED glows green, blue or magenta to indicate that the unit is decoding and
playing an MQA stream or file, and denotes provenance to ensure that the sound is
identical to that of the source material. It glows blue to indicate it is playing an MQA
Studio file, which has either been approved in the studio by the artist/producer or has
been verified by the copyright owner. It glows magenta to indicate that the unit is
rendering an MQA stream or file. This delivers the final unfold of the MQA file.
Green: MQA
Blue: MQA studio
Magenta: MQA Rendering
DSD
When the input signal format is DSD, this LED lights up white.
LDAC
When the signal format received by Bluetooth is LDAC, this LED lights up white.
BAL
When the output interface is BALANCED, this LED lights up white.
HPA
When the output interface is headphone output, this LED lights up white.
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Indicator light description
D40 PRO
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