1. Introducción
Gracias por la compraasing the TOPPING E50II Compact Desktop DAC. This device is designed to provide high-fidelity audio decoding for various digital sources. It features an AK4497S DAC chip, supports high-resolution audio formats up to PCM768kHz and DSD512, and offers versatile connectivity options including USB, optical, coaxial, RCA, and TRS balanced outputs. This manual provides essential information for proper setup, operation, and maintenance of your E50II.

Image 1.1: The TOPPING E50II Compact Desktop DAC in silver finish.
2. Información de seguridad
- No desmonte ni modifique el dispositivo. Las modificaciones no autorizadas pueden anular la garantía y suponer riesgos de seguridad.
- Mantenga el dispositivo alejado del agua, la humedad y las altas temperaturas.
- Utilice únicamente el adaptador de corriente proporcionado o una fuente de alimentación de 5 V compatible.
- Asegúrese de que haya una ventilación adecuada alrededor del dispositivo para evitar el sobrecalentamiento.
- Evite colocar objetos pesados sobre el dispositivo.
- Desconecte el cable de alimentación durante tormentas eléctricas o cuando no vaya a utilizarlo durante períodos prolongados.
3. Contenido del paquete
Por favor, compruebe que todos los artículos estén presentes en el paquete:
- TOPPING E50II Unit
- Mando a distancia
- Cable USB (Tipo A a Tipo C)
- USB Power Cable (Type-A to Type-C)
- Antena Bluetooth
- Manual de usuario (este documento)
- Tarjeta de garantía

Image 3.1: Included accessories: remote control, USB cables, and Bluetooth antenna.
4. Producto terminadoview
4.1 Panel frontal

Image 4.1: Front panel of the E50II, showing the display and control button.
- Pantalla de visualización: Muestra la entrada actual, sample rate, volume, and other status information.
- Botón multifunción: Press to power on/off, select input, or adjust settings.
4.2 Panel trasero

Image 4.2: Rear panel of the E50II, illustrating various input and output ports.
- Salidas RCA (L/R): Salida de audio analógica no balanceada.
- TRS Balanced Outputs (L/R): Salida de audio analógica balanceada.
- Entrada coaxial: Entrada de audio digital.
- Entrada óptica: Entrada de audio digital.
- Entrada USB-C: For connecting to a computer or other digital source.
- Entrada de alimentación USB-C: Para conectar a una fuente de alimentación de 5 V.
- Conector de antena Bluetooth: Para fijar la antena Bluetooth.
5. Configuración
5.1 Conexión de alimentación
Connect the provided USB power cable to the E50II's "POWER" USB-C port and then to a 5V power adapter (not included) or a USB port on your computer. The E50II requires a stable 5V power supply for optimal performance.
5.2 Conexiones de audio
Choose the appropriate input and output connections based on your audio system:
- Entrada USB: Connect the E50II's "USB" port to your computer or other USB audio source using the provided USB data cable.
- Entrada óptica/coaxial: Connect your digital audio source (e.g., CD player, TV) to the E50II's "OPTICAL" or "COAXIAL" input.
- Salida RCA: Connect the E50II's "SE" RCA outputs to your ampAltavoces activos o amplificadores mediante cables RCA.
- TRS Balanced Output: Connect the E50II's "BAL" TRS outputs to your balanced amplifier or active speakers using 6.35mm TRS cables. The E50II supports simultaneous output from both RCA and TRS ports.

Image 5.1: Close-up of the balanced TRS and unbalanced RCA output connections.
5.3 Bluetooth Antenna Installation
Screw the provided Bluetooth antenna onto the antenna connector on the rear panel of the E50II.
5.4 Driver Installation (for Windows)
For Windows operating systems, a dedicated driver is required for USB audio playback up to PCM768kHz and DSD512. The driver can be downloaded from the official TOPPING website. Follow the on-screen instructions for installation. macOS and Linux typically do not require a separate driver.
6. Instrucciones de funcionamiento
6.1 Funcionamiento básico

Image 6.1: A hand interacting with the multi-function button on the E50II's front panel.
- Encendido/apagado: Press and hold the multi-function button for 3 seconds to power on or off.
- Selección de entrada: Briefly press the multi-function button to cycle through available inputs (USB, Optical, Coaxial, Bluetooth).
- Control de volumen: Rotate the multi-function button to adjust the volume.
6.2 Uso del control remoto
El control remoto incluido proporciona acceso conveniente a varias funciones:
- Botón de encendido: Enciende y apaga la unidad.
- Botones de selección de entrada: Dedicated buttons for USB, Optical, Coaxial, and Bluetooth inputs.
- Subir/Bajar volumen: Ajusta el volumen de salida.
- Silenciar: Silencia o activa el sonido de la salida de audio.
- Botón EQ: Cycles through PEQ presets.
- Botón de filtro: Cycles through digital filter modes.
- Gain Button: Switches between Low and High gain modes.
6.3 TOPPING Home App Control
The E50II is compatible with the "TOPPING Home" app, allowing control from your smartphone or tablet via Bluetooth. This app enables input switching, EQ settings, and volume adjustment remotely.

Image 6.2: Smartphone displaying the TOPPING Home app interface for controlling the E50II.
6.4 Funcionamiento de Bluetooth
Para conectarse a través de Bluetooth:
- Switch the E50II input to Bluetooth mode. The display will show "BT".
- On your mobile device, search for "TOPPING E50II" in the Bluetooth settings and pair.
- Once connected, audio from your device will be streamed to the E50II. The E50II supports LDAC, aptX-Adaptive, aptX HD, aptX, AAC, and SBC codecs.

Image 6.3: A black E50II unit with a smartphone showing Bluetooth connection status.
6.5 PEQ (Parametric Equalizer) Function
The E50II features a 10-band Parametric Equalizer (PEQ) for precise sound customization. You can adjust frequency, gain, and bandwidth for each band. This function is accessible via the TOPPING Home app or dedicated PC software.

Image 6.4: Screenshot of the TOPPING TUNE FOR PC software interface, showing the 10-band PEQ settings.
6.6 Antesamp Función
The E50II can function as a preamplifier, allowing direct connection to a power amplifier or active speakers. In this mode, the volume can be controlled via the remote or the TOPPING Home app, providing precise output level control to prevent overload or under-driving of connected equipment.
7. Mantenimiento
- Limpie el dispositivo con un paño suave y seco. No utilice limpiadores líquidos ni aerosoles.
- Mantenga las aberturas de ventilación libres de polvo y residuos.
- Guarde el dispositivo en un lugar fresco y seco cuando no esté en uso.
8. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| No hay salida de sonido | Incorrect input/output selection, loose cables, muted volume. | Check input source, ensure cables are securely connected, unmute or increase volume. |
| El dispositivo no enciende | Power cable not connected, faulty power adapter. | Ensure power cable is connected to a working 5V source. Try a different power adapter. |
| Problemas de conexión Bluetooth | E50II not in Bluetooth mode, device not paired, interference. | Switch E50II to Bluetooth input. Re-pair the device. Ensure no strong interference sources nearby. |
| Audio distorsionado | Input signal too high, incorrect gain setting, faulty cables. | Reduce source volume. Adjust E50II gain setting. Try different audio cables. |
| Windows USB driver not working | Incorrect driver installation, driver conflict. | Reinstall the latest driver from the TOPPING website. Check for other conflicting audio drivers. |
9. Especificaciones
- Marca: TOPPING
- Modelo: E50II
- Chip DAC: AK4497S
- Interfaz USB: XMOS XU316
- Max USB Decoding: PCM 768kHz / DSD512
- Optical/Coaxial Decoding: Hasta 192 kHz
- Códecs Bluetooth: LDAC, aptX-Adaptive, aptX HD, aptX, AAC, SBC
- Modo de salida de audio: Estéreo
- Interfaces de salida: RCA (unbalanced), 6.35mm TRS (balanced)
- Interfaces de entrada: USB, Óptico, Coaxial, Bluetooth
- Características: 10-band PEQ, Preamp function, TOPPING Home App control, Top Sync circuit for low jitter.
10. Garantía y soporte
The TOPPING E50II is covered by the manufacturer's or authorized agent's warranty regulations. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, driver downloads, or service inquiries, please visit the official TOPPING websitio o póngase en contacto con su distribuidor local autorizado.
Official TOPPING Websitio: www.toppingaudio.com