1. Introducció
The LEAUDIO Topping D70 PRO OCTO is a high-fidelity Digital-to-Analog Converter (DAC) designed to deliver exceptional audio performance. Featuring 8 Cirrus Logic CS43198 chips, Bluetooth 5.1 with LDAC support, and a full-color Aurora UI, this device offers advanced audio decoding capabilities up to PCM768kHz/32bit and DSD512. This manual provides detailed instructions for setting up, operating, and maintaining your D70 PRO OCTO to ensure optimal performance.

Figura 1: Frontal view of the Topping D70 PRO OCTO HiFi DAC.
2. Contingut del paquet
Si us plau, reviseu atentament el paquet per veure si hi ha els elements següents:
- Topping D70 PRO OCTO Unit
- Control remot
- Cable USB
- Cable d'alimentació de CA.
- Antena Bluetooth
- Guia d'inici ràpid

Figure 2: Included accessories: Remote control, USB cable, AC cable, Bluetooth antenna, and Quick Start Guide.
3. Producte acabatview
The D70 PRO OCTO features a clear layout for easy connectivity and control.

Figure 3: Front panel (top) with display and control knob, and rear panel (bottom) with various input/output ports.
Panell frontal
- Pantalla de visualització: Shows current status, input, sample rate, and UI information.
- Botó de control: For navigation, volume adjustment, and menu selection.
- Botons tàctils: Three touch buttons for intuitive control of the Aurora UI.
Panell posterior
- Entrada USB: Connect to a computer for audio playback.
- Entrada coaxial: Entrada d'àudio digital.
- Entrada òptica: Entrada d'àudio digital.
- Connector d'antena Bluetooth: For wireless Bluetooth reception.
- USB-C (alimentació): Entrada de potència.
- Sortida RCA (E/D): Unbalanced analog audio output.
- XLR Output (L/R): Balanced analog audio output.
- Disparador de 12 V: Per a un control d'energia sincronitzat amb altres dispositius.
- Interruptor d'alimentació: Encès/apagat principal.
4. Configuració
4.1 Connexió inicial
- Connect the Bluetooth antenna to the designated connector on the rear panel.
- Connect the D70 PRO OCTO to a power source using the provided AC power cable.
- Connect your audio source (e.g., computer, CD player) to the appropriate input on the D70 PRO OCTO (USB, Coaxial, or Optical).
- Connect the D70 PRO OCTO's output (RCA or XLR) to your amplifier o altaveus actius.
- Turn on the D70 PRO OCTO using the power switch on the rear panel.
4.2 Driver Installation (Windows)
For Windows operating systems, a specific driver is required for optimal performance, especially for ASIO playback. The D70 PRO OCTO utilizes an XMOS XU316 and Thesycon custom driver. This driver can typically be downloaded from the manufacturer's official website. Other operating systems like Mac, Linux, iOS, and Android are generally driver-free and support plug-and-play functionality.

Figure 4: The D70 PRO OCTO offers wide compatibility with various operating systems, with specific driver requirements for Windows.
5. Funcionament
5.1 Controls bàsics
- Encès/apagat: Use the main power switch on the rear panel.
- Ajust de volum: Rotate the control knob on the front panel to adjust the output volume.
- Selecció d'entrada: Press the control knob or use the remote control to cycle through available inputs (USB, Coaxial, Optical, Bluetooth).
5.2 Aurora UI and Display Modes
The D70 PRO OCTO features a full-color Aurora UI with three touch buttons for an enhanced user experience. The display can show various playback information, including sample rate, volume, and input source. You can also switch between different display modes such as FFT (Fast Fourier Transform) and VU (Volume Unit) meters according to your preference.

Figure 5: The Aurora UI offers a full-color screen, touch buttons, customizable functions via the volume knob, and language switching options.
5.3 Bluetooth 5.1 Transmission
The D70 PRO OCTO supports Bluetooth 5.1 with advanced audio encoding protocols including LDAC, aptX-Adaptive, aptX HD, aptX, AAC, and SBC. This allows for high-quality wireless audio streaming from compatible devices.
- Select Bluetooth as the input source on the D70 PRO OCTO.
- Enable Bluetooth on your source device (e.g., smartphone, tablet).
- Cerca "D70 PRO OCTO" in your device's Bluetooth settings and pair.
- Un cop emparellat, l'àudio es transmetrà sense fil al DAC.

Figure 6: The D70 PRO OCTO supports Bluetooth 5.1 for high-quality wireless audio transmission.
6. Característiques clau
- 8x CS43198 DAC Chips: Equipped with eight Cirrus Logic flagship CS43198 chips for superior audio conversion.
- Suport d'àudio d'alta resolució: Supports PCM up to 768kHz/32bit and DSD512 audio decoding.
- Aurora UI: Full-color screen and three touch buttons for intuitive control and display.
- Modes de visualització versàtils: Switch between playback information, FFT, and VU meters.
- Bluetooth 5.1: Supports LDAC, aptX-Adaptive, aptX HD, aptX, AAC, and SBC for high-quality wireless streaming.
- Low Distortion and High Dynamic Range: Achieves THD+N <0.00007% and a dynamic range of 134dB for accurate sound reproduction.

Figure 7: Visual representation of key features including 8x CS43198 chips, color display, Aurora UI, Hi-Res Audio, LDAC, and performance metrics.

Figure 8: Detailed audio performance metrics including THD+N, SNR, DNR, and Noise levels, demonstrating the DAC's high fidelity.
7. Especificacions
| Característica | Detall |
|---|---|
| Xip DAC | 8x Cirrus Logic CS43198 |
| PCM Decoding | Fins a 768 kHz/32 bits |
| Descodificació DSD | Fins a DSD512 |
| Versió Bluetooth | 5.1 |
| Còdecs Bluetooth | LDAC, aptX-Adaptive, aptX HD, aptX, AAC, SBC |
| THD+N (RCA) | <0.00008% @ 1kHz (A-wt) |
| THD+N (XLR) | <0.00007% @ 1kHz (A-wt) |
| Dynamic Range (RCA) | 128dB @ 1kHz (A-wt) |
| Dynamic Range (XLR) | 134dB @ 1kHz (A-wt) |
| Output Impedance (RCA) | 50Ω |
| Impedància de sortida (XLR) | 100Ω |
| Entrades | USB, Coaxial, Optical, Bluetooth |
| Sortides | RCA, XLR |
| Dimensions | Aprox. 14.41 x 9.49 x 3.43 polzades (paquet) |
| Pes de l'article | Aprox. 4.29 lliures |
| Entrada de potència | USB-C (DC 15 V) |
8. Manteniment
To ensure the longevity and optimal performance of your D70 PRO OCTO, follow these maintenance guidelines:
- Neteja: Use a soft, dry cloth to clean the exterior of the device. Avoid using abrasive cleaners, solvents, or chemical sprays, as they may damage the finish.
- Col·locació: Col·loqueu el dispositiu sobre una superfície estable i plana, allunyada de la llum solar directa, fonts de calor i humitat excessiva. Assegureu-vos que hi hagi una ventilació adequada al voltant de la unitat.
- Potència: Always use the provided power adapter. Disconnect the power cable during lightning storms or when the unit is unused for extended periods.
- Manipulació: Eviteu deixar caure o sotmetre el dispositiu a forts impactes.
9. Solució De Problemes
If you encounter any issues with your D70 PRO OCTO, please refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Cable d'alimentació no connectat o presa de corrent defectuosa. | Ensure the power cable is securely connected and the outlet is functional. Check the power switch on the rear panel. |
| Sense sortida de so | Incorrect input/output selection, volume too low, or faulty cables. | Verify the correct input source is selected on the DAC. Check volume levels on both the DAC and connected amplifier/speakers. Ensure audio cables are securely connected and not damaged. |
| Problemes de connexió Bluetooth | El dispositiu no està en mode d'emparellament, està fora de l'abast o hi ha interferències. | Ensure the DAC is in Bluetooth input mode. Place the source device closer to the DAC. Try unpairing and re-pairing the devices. Avoid sources of strong electromagnetic interference. |
| Àudio distorsionat | Input signal too high, faulty cables, or incorrect settings. | Reduce the volume on the source device. Check audio cables for damage. Ensure the DAC's settings (e.g., filter modes) are appropriate for your audio. |
| Windows PC not recognizing DAC | Missing or incorrect USB driver. | Download and install the latest USB driver from the LEAUDIO or Topping official website. Restart your computer and the DAC. |
Si el problema persisteix després de provar aquestes solucions, poseu-vos en contacte amb l'atenció al client.
10. Garantia i Suport
The LEAUDIO Topping D70 PRO OCTO is covered by a manufacturer's warranty. Please refer to the warranty card included in your package or visit the official LEAUDIO/Topping weblloc web per obtenir informació detallada sobre els termes i condicions de la garantia.
For technical support, service, or further inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt and product serial number handy when seeking support.