LOXJIE D40 Pro

LOXJIE D40 Pro Audio DAC Headphone AmpManyèl itilizatè lifier

Model: D40 Pro

1. Entwodiksyon

Mèsi pou acha aasing the LOXJIE D40 Pro Audio DAC Headphone Amplifier. This device is a high-performance digital-to-analog converter and headphone amplifier designed to deliver exceptional audio quality. Featuring the ES9039MSPRO DAC chip, XMOS XU-316 USB solution, Bluetooth 5.1 with LDAC/aptX HD, and MQA support, the D40 Pro is engineered for audiophiles seeking a pristine listening experience. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your device.

LOXJIE D40 Pro Instruction Manual Cover
Figure 1: LOXJIE D40 Pro Instruction Manual Cover

2. Enfòmasyon sou Sekirite

  • Pa demonte oswa modifye aparèy la.
  • Pa ekspoze aparèy la nan dlo, imidite, oswa tanperati ekstrèm.
  • Sèvi sèlman ak adaptè kouran ak kab ki espesifye yo.
  • Asire bon vantilasyon pou anpeche surchof.
  • Kenbe aparèy la lwen gwo chan mayetik.
  • Deploge aparèy la pandan tanpèt zèklè oswa lè li pa itilize pou yon tan long.

3. Pake kontni

Tanpri verifye ke tout atik yo prezan nan pakè a:

  • LOXJIE D40 Pro Unit
  • Remote kontwòl
  • Antèn Bluetooth
  • USB kab
  • Kab pouvwa
  • Manyèl Itilizatè (dokiman sa a)
  • Kat Garanti
LOXJIE D40 Pro Package Contents
Figure 2: Package Contents of LOXJIE D40 Pro

4. Pwodwi souview

The LOXJIE D40 Pro is a versatile audio device combining a high-resolution DAC and a powerful headphone amplifier. It supports various input and output options, including USB, Optical, Coaxial, I²S, Bluetooth, and AES/EBU, with RCA, XLR, and headphone jack outputs.

4.1. Karakteristik

  • 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.
  • Ekoutè a amplifier is designed with a fully balanced circuit and has 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.
  • Konpozan disrè ki fèt espesyalman lineyè voltage regilatè ak miltip ba-bri 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.
  • Ekipe ak kontwòl remote ak fonksyon konplè kontwòl remote.
LOXJIE D40 Pro Key Features
Figure 3: Key Features of LOXJIE D40 Pro

4.2. Pati Non ak Fonksyon

LOXJIE D40 Pro Front and Rear Panel Diagram
Figure 4: Front and Rear Panel Layout with Numbered Parts
Non.Non PatiFonksyon
1Bouton switch (ON/OFF)Press to turn on/off; Hold to turn off the screen.
2bouton FNPress to switch filter mode.
3Bouton seleksyon antrePress to switch input source; Hold to switch directly to Bluetooth.
4Bouton seleksyon pwodiksyon anPress to switch line/headphone; Hold to switch line output mode.
5Ekspozisyon ekranShows current status, settings, and volume.
6Fonksyon boutonPress to enter menu; Hold to exit menu; Rotate to change value or volume.
7Jack kas ekoutè 4.4mmBalanced headphone output.
8Jack kas ekoutè 6.35mmUnbalanced headphone output.
9Jack kas ekoutè balanseBalanced headphone output (XLR 4-pin).
10RCA SòtiUnbalanced analog audio output.
11Antèn BluetoothPou resepsyon siyal Bluetooth.
12XLR SòtiBalanced analog audio output.
13AES/EBU D'Antre odyo dijital.
14I²S input (not HDMI compatible)Digital audio input. Uses HDMI socket but is not HDMI compatible.
15Optical opinyonAntre odyo dijital.
16Antre kowaksyalAntre odyo dijital.
17D 'USBDigital audio input from computer.
18Power input (100~240V AC)Konekte ak ekipman pou pouvwa AC.

5. Enstalasyon

5.1. Konekte ak pouvwa

  1. Ensure the D40 Pro is switched off.
  2. Connect the provided power cable to the Power input (18) on the rear panel of the D40 Pro.
  3. Plug the other end of the power cable into a suitable AC power outlet (100-240V AC).

5.2. Konekte Sous Odyo yo

The D40 Pro supports multiple digital audio inputs:

  • Antre USB (17): Connect your computer (Windows 7/8/8.1/10/11, Mac OSX, Linux) to the D40 Pro using a USB Type-B cable.
  • Optical Input (15): Connect an optical cable from your audio source (e.g., TV, CD player) to the Optical input.
  • Coaxial Input (16): Connect a coaxial cable from your audio source to the Coaxial input.
  • AES/EBU Input (13): Connect an AES/EBU cable from your audio source to the AES/EBU input.
  • I²S Input (14): Connect an I²S source. Nòt: This uses an HDMI socket but is not HDMI compatible. Ensure your source's I²S interface definition matches the D40 Pro's settings (see I²S Setting in Operating Instructions).
  • Bluetooth (11): For wireless connection, ensure the Bluetooth antenna is securely attached to the rear panel.

5.3. Konekte Sorti Audio

The D40 Pro offers both line outputs and headphone outputs:

  • RCA Output (10): Connect RCA cables to your amplifier or active speakers for unbalanced analog audio output.
  • XLR Output (12): Connect XLR cables to your amplifier or active speakers for balanced analog audio output.
  • Headphone Outputs (7, 8, 9):
    • 4.4mm balanced headphone jack (7)
    • 6.35mm unbalanced headphone jack (8)
    • Balanced headphone jack (XLR 4-pin) (9)
    Connect your headphones to the appropriate jack. The D40 Pro features a professional-grade headphone amplifier with independent volume control.
LOXJIE D40 Pro Rear Panel Connections
Figi 5: Koneksyon Panèl Dèyè a

6. Operasyon Enstriksyon

6.1. Operasyon debaz

  • Pouvwa ON/OFF: Press the Switch button (1) to turn the unit on or off. Hold the button to turn off the screen.
  • Seleksyon Antre: Press the Input selection button (3) to cycle through available inputs (USB, Optical, Coaxial, AES/EBU, I²S, Bluetooth). Hold the button to directly switch to Bluetooth.
  • Seleksyon Sòti: Press the Output selection button (4) to switch between line output and headphone output. Hold the button to switch line output mode (Balanced/Unbalanced).
  • Kontwòl Volim: Rotate the Function knob (6) to adjust the volume.
  • Navigasyon nan meni: Press the Function knob (6) to enter the menu. Rotate the knob to navigate options and change values. Hold the knob to exit the menu.
  • Mòd filtre: Press the FN button (2) to switch between different PCM filter modes.

6.2. Kontwòl Remote

The D40 Pro comes with a full-function remote control for convenient operation.

LOXJIE D40 Pro Remote Control Diagram
Figi 6: Aranjman kontwòl remote la

Fonksyon kontwòl remote:

  • Pouvwa ON/OFF: Top-left button.
  • Screen off (DISP): Button to turn off the display.
  • Bèbè: Button to mute/unmute audio. Long press to reconnect Bluetooth.
  • Meni/OK: Center button for menu entry/confirmation.
  • Anwo/Desan/Goch/Dwa: Navigation buttons for menu.
  • Output Select: Button to switch between line/headphone output.
  • Chanjman Antre: Short press to switch input source; Long press to switch to Bluetooth.
  • EQ: Pa gen fonksyon.
  • MOD: Digital filter switch.
  • LEVEL (Volume +/-): Buttons to adjust volume.

Remote Control Notes:

  • If the remote control does not work even when very close to the unit, replace the batteries.
  • Retire pil si kontwòl remote la pa pral itilize pou yon tan long.
  • Jete pil yo itilize dapre règleman lokal yo.
  • Uses 2 AAA batteries.
  • Operating distance: 5-8 meters.

6.3. Bluetooth Koneksyon

  1. Switch the input source of the D40 Pro to Bluetooth.
  2. On your mobile phone or other Bluetooth device, enable Bluetooth and search for "Loxjie D40 PRO".
  3. Select "Loxjie D40 PRO" to connect. Once your device displays "connected", the connection is successful.
LOXJIE D40 Pro Bluetooth 5.1 LDAC APTXHD
Figure 7: Bluetooth 5.1 with LDAC and aptX HD Support

6.4. Anviwònman meni

Access the menu by pressing the Function knob (6). Rotate the knob to navigate and select options.

6.4.1. Input Menu

  • USB: USB Audio input.
  • OPT: D 'optik.
  • COA: Antre kowaksyal.
  • AES: AES/EBU input.
  • Mwen²S: I²S input.
  • BT: Antre Bluetooth.

6.4.2. Output Menu

  • BAL: Balanced Line Output (XLR).
  • SE: Single-Ended Line Output (RCA).
  • HPA: Ekoutè Amplifier Sòti.

6.4.3. PCM Filter Modes

The D40 Pro offers 7 types of PCM filters:

  • FL0: Filter Off (NOS mode).
  • FL1: Minimum Phase.
  • FL2: Apodizing.
  • FL3: Linear Fast.
  • FL4: Linear Slow.
  • FL5: Minimum Fast.
  • FL6: Minimum Slow.
  • FL7: Low Dispersion.
LOXJIE D40 Pro DPLL and Filter Settings
Figure 8: DPLL Function and Filter Response Graph

6.4.4. DSD Filter Modes

The D40 Pro offers 4 types of DSD filters:

  • dF1: 47kHz Cutoff.
  • dF2: 50kHz Cutoff.
  • dF3: 60kHz Cutoff.
  • dF4: 70kHz Cutoff.

6.4.5. Gain Setting

  • GL: Low Gain.
  • GH: High Gain.

6.4.6. DPLL Setting

DPLL (Digital Phase-Locked Loop) setting (dP0-9, default is dP5). This function adjusts the internal DPLL bandwidth to balance anti-clock jitter and input tolerance.

  • A larger number (e.g., dP9) increases the range to adapt to jitter, useful for unstable input signals (e.g., from TV).
  • A smaller number (e.g., dP0) improves performance against clock jitter, ideal for stable input signals.

6.4.7. I²S Setting

This option is used to match different I²S interface standards. Please check the interface definition of your signal source before use.

  • Hd1: Normal phase, DSD is normal.
  • Hd2: Inverted phase, DSD is normal.
LOXJIE D40 Pro I2S Normal and Inverted Pinout
Figure 9: I²S Pinout Diagrams (Normal and Inverted)

6.4.8. Audio Phase

  • Ni: Normal (2+, 3-).
  • Env: Inverted (2-, 3+).

6.4.9. Klate

  • bL1 - bL5: Adjusts display screen brightness.

6.5. MQA Playback

The D40 Pro supports MQA (Master Quality Authenticated) decoding via USB, optical, coaxial, and AES/EBU inputs. MQA delivers the sound of the original master recording.

LOXJIE D40 Pro MQA Full Decoding
Figure 10: MQA Full Decoding Capability

How to Play MQA:

  • The D40 Pro's MQA playback does not require special playback software. Audio players supporting ASIO or WASAPI audio output (e.g., foobar2000, Audirvanaplus) are sufficient.
  • For optimal MQA audio quality, set your computer's volume to maximum.
  • Lè w ap jwe yon MQA file, the D40 Pro's display will show the sampling rate of the original master recording.

Notes on Playing MQA-CD:

  • Ensure the CD being played is a genuine MQA-CD.
  • Verify that the optical or coaxial signal output from the CD player is an unprocessed source code.

6.6. Endikatè Limyè Deskripsyon

LOXJIE D40 Pro Front Panel Indicators
Figi 11: Endikatè Front Panel
  • Endikatè pouvwa: Red when in standby. Green when powered on and the display is off.
  • MQA Indicator:
    • Vèt: Indicates MQA file lèktur.
    • Ble: Indicates MQA Studio file playback (artist/producer approved).
    • Magenta: Indicates MQA Rendering (final unfold of MQA file).
  • Endikatè DSD: Lights white when the input signal format is DSD.
  • LDAC Indicator: Lights white when the Bluetooth signal format is LDAC.
  • BAL Indicator: Lights white when the output interface is BALANCED.
  • HPA Indicator: Lights white when the output interface is headphone output.

7. Konsèy itilizatè yo

  • For the best sound quality from your computer, ensure the D40 Pro's USB driver is installed and the output is set to ASIO or WASAPI in your audio player software.
  • Experiment with different PCM and DSD filter modes to find the sound signature that best suits your preferences and audio content.
  • If experiencing sound interruptions, especially with less stable input sources like TV, try increasing the DPLL setting (e.g., from dP5 to dP7 or dP8).
  • Lè w ap itilize kas ekoutè a amplifier, start with a low volume and gradually increase it to a comfortable listening level to prevent hearing damage.

NAN. Depanaj

PwoblèmKòz posibSolisyon
Pa gen pouvwaPower cable not connected or power outlet faulty.Tcheke koneksyon kab kouran an. Eseye yon lòt priz kouran.
Pa gen pwodiksyon sonIncorrect input/output selected; Volume too low; Cables not connected properly; Source device issue.Verify input source and output mode. Increase volume. Check all audio cable connections. Ensure source device is playing audio.
Son defòmeInput signal too strong; Incorrect filter setting; Ground loop.Reduce volume on source device. Try different PCM/DSD filters. Check for ground loop issues in your setup.
Koneksyon Bluetooth echweD40 Pro not in Bluetooth mode; Device too far; Interference.Ensure D40 Pro input is set to Bluetooth. Move device closer. Avoid interference sources. Try re-pairing.
Remote kontwòl pa travayBatteries dead or inserted incorrectly; Obstruction.Replace batteries (2x AAA). Check battery polarity. Remove any obstructions between remote and D40 Pro.
Sound interruptions/dropoutsUnstable input signal; DPLL setting too low.Increase the DPLL setting (e.g., dP7-dP9) in the menu. Ensure stable signal from source.

9. Espesifikasyon

9.1. Entèfas

  • Antre: USB, Optical, Coaxial, Bluetooth, I²S, AES/EBU
  • Sòti: RCA, XLR, 6.35mm headphone jack, 4.4mm balanced headphone jack, Balanced headphone jack (XLR 4-pin)

9.2. Pèfòmans Odyo

  • THD+N: 0.00005% (-125dB) (UN-WTD)
  • Ranje dinamik:
    • XLR: 133dB
    • RCA: 128dB
    • HPA: 125dB
  • SNR:
    • XLR: 133dB
    • RCA: 128dB
    • HPA: 125dB
  • Sòti Nivo:
    • XLR: 5.2Vrms
    • RCA: 2.5Vrms
  • Enpedans Sòti:
    • XLR: 100Ω
    • RCA: Near 0Ω
  • Ekoutè AMP Gwo benefis:
    • XLR: +20dB
    • RCA: +14dB
  • Pouvwa Sòti kas ekoutè:
    • 6000mW x 2 (16Ω)
    • 3000mW x 2 (32Ω)
    • 700mW x 2 (300Ω)
    • 350mW x 2 (600Ω)
LOXJIE D40 Pro Performance Data THD+N SNR Dynamic Range
Figure 12: Excellent Performance Data (THD+N, SNR, Dynamic Range)
LOXJIE D40 Pro Frequency Response IMD
Figure 13: Frequency Response and IMD Graphs

9.3. Espesifikasyon odyo

  • Transmisyon USB: Asinkronizasyon
  • USB konpatibilite: Windows 7/8/8.1/10/11, Mac OSX, Linux
  • Dekodeur MQA: USB/Optical/Coaxial/AES
  • Dekodeur MQA-CD: Optical/Coaxial/AES
  • Pwofondè Bit:
    • USB: 1bit, 16~32bit
    • Optical/Coaxial/AES/EBU: 1bit, 16~24bit
  • Samppousantaj ling:
    • USB:
      • PCM: 44.1~768kHz
      • DSD: 2.8224~22.5792MHz (DSD64-DSD512)
    • Optical/Coaxial/AES/EBU:
      • PCM: 44.1~192kHz
      • DSD: DSD64 (DoP)
  • Bluetooth Espesifikasyon: 5.0 (supports SBC, AAC, aptX, aptX HD, LDAC)

9.4. Jeneral

  • Konsomasyon pouvwa: 5W
  • Power Standby: <0.5W
  • Dimansyon (LxHxP): 240 x 43 x 195mm
  • Pwa: 1.15kg / 2.53 liv
  • Materyèl: Metal
  • Sètifikasyon: CE

Espesifikasyon yo sijè a chanje san avètisman.

10. Antretyen

  • Netwayaj: Sèvi ak yon twal mou epi sèk pou netwaye deyò aparèy la. Pa sèvi ak pwodui netwayaj likid oswa ayewosòl.
  • Depo: Sere aparèy la nan yon kote ki fre epi sèk, lwen limyè solèy dirèk ak tanperati ekstrèm.
  • Mizajou mikrolojisyèl: The D40 Pro supports firmware upgrades via the USB interface. Check the official LOXJIE websit la pou dènye firmwèr la ak enstriksyon yo.

11. Garanti ak sipò

For warranty information, please refer to the warranty card included in your package. For technical support, firmware, and driver downloads, please visit the official LOXJIE websit:

http://www.loxjie-audio.com/download.asp

Please keep your purchase receipt as proof of purchase for warranty claims.

Documents - LOXJIE – D40 Pro
[PDF] Manyèl itilizatè
loxjie d40 pro说明书 D40 Pro Manual LOXJIE AUDIO Official LOXJIE音频官网 D40PRO drive google file d 1BHviYGLgJvYf TycT9KZbxpOV1g uZfH view lyen pataje usp |||
D40 PRO , , , , http://www.loxjie-audio.com/download.asp Ver 1.1 D40 PRO USBAES MQA , MQA-CD ESSDACES9039MSPRO,MQA XMOS XU-316PCM32bit/768kHzDSDDSD512 DSDAES/EBUDoP64 ,USB LDAC 24bit/96kHz , APTX/HD SBC AAC JAS Hi-Res THD N D40 PRO USB / / / / I2S / AES / / x1 / 4...
nòt: 48 filegwosè: 1.49 M kantite paj: 24 dat dokiman: 2023-05-10
Loxjie D40 PRO Instruction Manual
Instruction manual for the Loxjie D40 PRO, a high-resolution USB DAC featuring MQA decoding, ESS ES9039MSPRO DAC chip, XMOS XU-316, and a balanced headphone amplifier. Details specifications, features, remote control operation, parts identification, function settings, MQA playback, and indicator light descriptions.
nòt: 41 filegwosè: 1.24 M kantite paj: 12 dat dokiman: 2023-07-13
[PDF] Dokiman

D40 PRO , , , , http://www.loxjie-audio.com/download.asp Ver 1.1 D40 PRO USB AES MQA , MQA...
nòt: 20 filegwosè: 1.49 M kantite paj: 24 dat dokiman: 2023-05-10