LEAUDIO D50 III
Topping D50 III Desktop HiFi DAC User Manual
Model: D50 III
1. Pengenalan
Thank you for choosing the Topping D50 III Desktop HiFi DAC. This device is designed to provide high-fidelity audio conversion, featuring dual ES9039Q2M DAC chips for superior sound quality, LDAC wireless connectivity, and flexible output options. This manual will guide you through the setup, operation, and maintenance of your D50 III.
The D50 III is engineered for audiophiles and enthusiasts seeking pristine audio reproduction from various digital sources. Its robust design and advanced circuitry ensure a premium listening experience.
2. Apa yang ada di dalam Kotak
Sila semak kandungan pakej anda untuk memastikan semua item ada:
- Topping D50 III DAC Unit
- Alat Kawalan Jauh
- Kabel USB AC
- Kabel CC USB
- Antena Bluetooth
- Kad Maklumat Produk
- Guide for Bluetooth Remote

Image: Diagram showing the Topping D50 III unit, remote control, USB A-C cable, USB C-C cable, Bluetooth antenna, product information card, and Bluetooth remote guide.
3. Produk Lebihview
The Topping D50 III features a sleek, compact design with intuitive controls and comprehensive connectivity options.
Panel Depan

Imej: Depan view of the Topping D50 III, showing the power button, display screen, and navigation/volume buttons.
- Butang Kuasa: Press to turn on/off, short press to cycle through inputs.
- Skrin Paparan: Menunjukkan input semasa, sample rate, and volume level.
- Navigation/Volume Buttons: Used for menu navigation and volume adjustment.
Panel Belakang

Imej: Belakang view of the Topping D50 III, displaying various input and output ports including RCA, Optical, Coaxial, USB-C, Bluetooth antenna connector, 12V Trigger, and Power input.
- RCA Outputs (L/R): Unbalanced analog audio output.
- TRS Outputs (L/R): Balanced analog audio output.
- Input sepaksi: Input audio digital.
- Input Optik: Input audio digital.
- Input USB-C: Digital audio input for PC, Mac, Linux, iOS/Android devices.
- Penyambung Antena BT (Bluetooth): Untuk penerimaan audio tanpa wayar.
- Pencetus 12V: Allows synchronous power on/off with compatible devices.
- Input Kuasa: Input kuasa DC.
Ciri-ciri Utama
- Dual ES9039Q2M DACs: Utilizes two ES9039Q2M chips for improved SNR, dynamic range, and lower distortion.
- New I/V Conversion Circuit: Designed for enhanced audio reproduction with lower distortion and noise.
- LDAC Wireless: Equipped with QCC5125 and Bluetooth 5.1, supporting LDAC/aptX-Adaptive/aptX-HD/AAC/SBC up to 96kHz/24bit.
- Plug and Play USB: Compatible with Windows 10/11, MAC, Linux, iOS/Android. Supports PCM768kHz/32bit and DSD512.
- Mod Output Serbaguna: Features RCA and TRS balanced outputs with selectable 4V/2V or 5V/2.5V modes.
- PraampFungsi penyangga: Can operate in DAC mode or Preamp mode, allowing volume control for active speakers or power amppenyelamat.

Image: Infographic highlighting key features such as Dual ES9039Q2M, Hi-Res Audio certification, LDAC support, new I/V conversion, Dual Type-C, low THD+N, DSD/PCM support, precise PEQ adjustment, and a new Bluetooth remote control.

Image: Detailed diagram illustrating the dual ES9039Q2M DAC chip architecture within the D50 III, emphasizing the separate chips for left and right channels.
4. Persediaan
Follow these steps to set up your Topping D50 III DAC:
- Sambungkan Kuasa: Connect the provided power adapter to the D50 III's power input and then to a wall outlet.
- Sambungkan Output Audio: Choose your preferred output method:
- RCA: Connect RCA cables from the D50 III's RCA outputs to your amppembesar atau pembesar suara aktif.
- TRS (Balanced): Connect TRS cables from the D50 III's TRS outputs to your balanced amppembesar atau pembesar suara aktif.
- Sambungkan Input Audio: Pilih input audio digital yang anda inginkan:
- USB: Connect a USB cable (A-C or C-C) from your computer, smartphone, or tablet to the D50 III's USB-C input. For Windows, you may need to install the Thesycon driver from the Topping webtapak.
- Optik/Koaksial: Connect an optical or coaxial cable from your digital audio source (e.g., CD player, TV) to the corresponding input on the D50 III.
- Bluetooth: Screw the Bluetooth antenna onto the BT connector on the rear panel.
- Hidupkan kuasa: Press the power button on the front panel or the remote control to turn on the D50 III.
- Pencetus 12V (Pilihan): If you have a compatible device (like the Topping A50 III) that supports 12V Trigger, connect a 12V trigger cable between the D50 III and the other device for synchronized power control.

Imej: Jarak dekat view of the rear panel of the D50 III, showing the 12V Trigger port with a cable connected, illustrating its use for synchronized power control with other devices.

Image: The Topping D50 III stacked with a Topping A50 III amplifier on a desk next to a laptop and headphones, demonstrating a typical setup where both devices are used together.
5. Arahan Operasi
Operasi Asas
- Hidupkan/Mati Kuasa: Press the power button on the front panel or the remote.
- Pemilihan Input: Short press the power button on the front panel to cycle through USB, Optical, Coaxial, and Bluetooth inputs. Alternatively, use the input selection buttons on the remote.
- Kawalan Kelantangan: Use the '+' and '-' buttons on the front panel or the remote to adjust the volume.
- Redam: Press the mute button on the remote control to mute/unmute the audio output.
Tetapan Menu
The D50 III offers various settings accessible via the menu. Use the navigation buttons on the front panel or remote to enter and navigate the menu.
- Mod Output: Select between 4V/2V (standard) and 5V/2.5V (high output) modes for RCA and TRS outputs.
- DAC/Preamp Mod: Choose between pure DAC mode (fixed output) or Preamp mode (variable output with volume control).
- Pairing Bluetooth: Enter the Bluetooth menu to pair with new devices.
- Kecerahan Paparan: Adjust the brightness of the display screen.
- Tetapan Penapis: Select different digital filter modes (if available) to fine-tune the sound.
6. Spesifikasi
The following table details the technical specifications of the Topping D50 III DAC:
| Parameter | RCA | TRS |
|---|---|---|
| THD+N @1kHz (A-wt) | <0.00008% @1kHz | <0.00006% @1kHz |
| THD @20-20kHz (90kBW) | <0.0004 % @20-20kHz | <0.0002% @20-20kHz |
| SNR @MAX OUT 1kHz (A-wt) | 127dB @ 1kHz | 132dB @ 1kHz |
| Julat Dinamik @1kHz (A-wt) | 127dB @ 1kHz | 132dB @ 1kHz |
| Respons Kekerapan | 20Hz-20kHz (0.1dB), 20Hz-40kHz (0.3dB) | 20Hz-20kHz (0.1dB), 20Hz-40kHz (0.3dB) |
| Tahap Keluaran | 2.0Vrms @0dBFS (4V Mode), 2.5Vrms @0dBFS (5V Mode) | 4.0Vrms @0dBFS (4V Mode), 5.0Vrms @0dBFS (5V Mode) |
| Bunyi bising (A-wt) | <1.1uVrms | <1.3uVrms |
| Saluran Crosstalk | -136dB@1kHz | -147dB @1kHz |
| Baki Saluran | 0.3dB | 0.3 dB |
| Impedans Keluaran | 50Ω | 100Ω |
Nota: Data di atas adalah hasil yang diperoleh daripada ujian makmal TOPPING di bawah AC220V 50Hz dan D50 III yang ditetapkan kepada mod output 5V.

Image: A table displaying detailed technical specifications for the Topping D50 III DAC, including THD+N, SNR, Dynamic Range, Frequency Response, Output Level, Noise, Channel Crosstalk, Channel Balance, and Output Impedance for both RCA and TRS outputs.
Spesifikasi Umum
- Dimensi Produk: 4.92 x 3.94 x 0.1 inci
- Berat: 2.05 paun
- Jenis Pemasangan: Pemasangan Meja
- Bekalan Maksimum Voltage: 5 Volt
- Bekalan Minimum Voltage: 5 Volt
- Negara Asal: China
7. Penyelenggaraan
To ensure the longevity and optimal performance of your Topping D50 III, please follow these maintenance guidelines:
- Pembersihan: Use a soft, dry cloth to wipe the exterior of the unit. Avoid using abrasive cleaners, solvents, or chemical sprays, as they may damage the finish or internal components.
- penempatan: Letakkan D50 III di atas permukaan yang stabil dan rata, jauh daripada cahaya matahari langsung, sumber haba dan kelembapan berlebihan. Pastikan pengudaraan yang mencukupi di sekeliling unit.
- Sambungan: Periodically check all cable connections to ensure they are secure and free from dust or corrosion.
- Storan: Jika menyimpan unit untuk tempoh yang lama, putuskan sambungannya daripada kuasa dan simpan di tempat yang sejuk dan kering.
8. Penyelesaian masalah
If you encounter issues with your D50 III, refer to the following common problems and solutions:
- Tiada Keluaran Bunyi:
- Ensure the D50 III is powered on.
- Verify that the correct input source is selected on the D50 III.
- Check all audio cable connections between the D50 III and your amppembesar/ pembesar suara.
- Pastikan anda amplifier/speakers are powered on and set to the correct input.
- Check the volume level on the D50 III and your amplifier/speakers; ensure it is not muted.
- If using USB, ensure the correct audio output device is selected in your computer's sound settings and that the necessary drivers are installed for Windows.
- Bunyi Herot:
- Check if the input source's volume is too high, causing clipping.
- Pastikan kabel disambungkan dengan selamat dan tidak rosak.
- Sahkan bahawa sample rate and bit depth settings on your source device are compatible with the D50 III.
- Cuba audio yang berbeza file or source to rule out source-related issues.
- Isu Sambungan Bluetooth:
- Pastikan antena Bluetooth dipasang dengan selamat.
- Make sure the D50 III is in Bluetooth input mode.
- Unpair and re-pair the D50 III with your Bluetooth device.
- Pastikan tiada peranti lain yang mengganggu isyarat Bluetooth.
- Try moving your Bluetooth device closer to the D50 III.
- Alat Kawalan Jauh Tidak Berfungsi:
- Periksa bateri pada alat kawalan jauh dan gantikan jika perlu.
- Ensure there are no obstructions between the remote and the D50 III.
- Point the remote directly at the D50 III's front panel.
Jika masalah berterusan selepas mencuba penyelesaian ini, sila hubungi sokongan pelanggan.
9. Waranti dan Sokongan
For information regarding the product warranty, please refer to the warranty card included in your product packaging or visit the official LEAUDIO/Topping webtapak. Terma dan syarat waranti mungkin berbeza mengikut wilayah dan peruncit.
For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact the retailer where you purchased the product or visit the official LEAUDIO/Topping support website. Please have your product model and serial number ready when contacting support.
Pengeluar: LEAUDIO
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