1. Introduction
The WiiM Ultra is a versatile and powerful all-in-one music streamer and digital preamplifier designed to elevate your audio experience. Featuring a sleek aluminum design, a vibrant 3.5-inch touchscreen, and extensive connectivity options, it serves as a central hub for your music system. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your WiiM Ultra.

Figure 1.1: Front view of the WiiM Ultra Music Streamer, showcasing its touchscreen display.
2. What's in the Box
Carefully unpack your WiiM Ultra and ensure all items are present:
- WiiM Ultra x 1
- WiiM Voice Remote (AAA batteries not included) x 1
- Quick start guide x 1
- Phono ground adapter x 1
- 100~240V AC power cable (1.5m) x 1
- HDMI cable (1.5m) x 1
- RCA audio cable (1.5m) x 1
- Optical audio cable (1.5m) x 1

Figure 2.1: Contents of the WiiM Ultra packaging.
3. Setup
3.1 Initial Connection
- Place your WiiM Ultra on a stable surface near your audio system.
- Connect the power cable to the WiiM Ultra and then to a power outlet.
- Connect your audio system components (speakers, amplifier, etc.) to the appropriate input/output ports on the rear of the WiiM Ultra. Refer to Section 3.2 for detailed port descriptions.
3.2 Rear Panel Connections
The rear panel of the WiiM Ultra offers a comprehensive array of input and output options:
- IN (RCA): Stereo analog input for external audio sources.
- PHONO (RCA): Dedicated phono input with ground terminal for turntables.
- GROUND: Ground terminal for phono connection.
- IN (Optical): Optical digital input.
- HDMI ARC: HDMI Audio Return Channel for TV audio.
- USB: USB-A port for local music playback from a USB drive.
- OUT (RCA): Stereo analog output to an amplifier or powered speakers.
- SUB OUT: Subwoofer output for connecting a powered subwoofer.
- COAX OUT: Coaxial digital output.
- TRIGGER OUT: 12V trigger output for controlling other devices.
- OUT (Optical): Optical digital output.
- LAN: Ethernet port for wired network connection.
- POWER: Power input.

Figure 3.1: Detailed view of the WiiM Ultra's rear panel connections.
Video 3.1: Official overview of the WiiM Ultra's multiroom music streaming capabilities and connectivity options.

Figure 3.2: Connectivity diagram showing how the WiiM Ultra integrates with various audio and smart home devices.
4. Operating Instructions
4.1 Power On/Off
Press the power button on the rear panel to turn the device on or off. The touchscreen will illuminate upon startup.
4.2 Touchscreen Navigation
The 3.5-inch touchscreen provides intuitive access to various functions, including input selection, output settings, EQ adjustments, and screen display options.

Figure 4.1: Various methods for controlling the WiiM Ultra, including the touchscreen.
4.3 WiiM Home App Control
For full control and advanced features, download the WiiM Home App on your smartphone or tablet. The app allows you to manage music streaming, synchronize speakers for multiroom audio, adjust settings, and more.

Figure 4.2: The WiiM Home App interface for managing your music and devices.
Video 4.1: A guide to using the WiiM Home App for seamless control and multiroom audio setup.
4.4 Music Streaming and Playback
The WiiM Ultra supports high-resolution audio playback up to 24-bit/192 kHz. You can stream music from various platforms like Spotify, Amazon Music, TIDAL, and Qobuz. It also supports local music playback from a USB drive connected to the USB-A port.

Figure 4.3: Supported music streaming services.
4.5 Multiroom Audio
Effortlessly create a unified sound system across your home by grouping multiple WiiM devices, Amazon Echo, or Google Home devices. Manage playback and volume for all zones through the WiiM Home App.

Figure 4.4: Multiroom audio setup with WiiM Ultra.
4.6 Home Theater Integration
Enhance your entertainment experience with HDMI ARC and Subwoofer Out. The WiiM Ultra allows for rich stereo sound for movies, shows, and games, with customizable EQ settings and deep bass from a powered subwoofer.

Figure 4.5: WiiM Ultra integrated into a home theater system.
5. Maintenance
To ensure the longevity and optimal performance of your WiiM Ultra, follow these maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or abrasive materials.
- Ensure proper ventilation around the device to prevent overheating.
- Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Regularly check for and install firmware updates via the WiiM Home App to ensure the latest features and performance improvements.
6. Troubleshooting
If you encounter issues with your WiiM Ultra, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power outlet issue | Ensure power cable is securely connected; Try a different power outlet. |
| No sound output | Incorrect output selected; Cables not connected properly; Volume too low | Check audio output settings in the app/touchscreen; Verify cable connections; Increase volume. |
| Wi-Fi connection unstable | Weak Wi-Fi signal; Router issues | Move device closer to router; Restart router; Use wired Ethernet connection. |
| App not connecting to device | Device not powered on; Device not on the same network as phone | Ensure device is powered on; Connect both device and phone to the same Wi-Fi network. |
| Cannot play music from USB | Unsupported file format; USB drive not formatted correctly | Ensure music files are in a supported format (e.g., FLAC, WAV, MP3); Format USB drive to FAT32 or NTFS. |
7. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 8.3 x 7.87 x 2.83 inches |
| Item Weight | 3.13 pounds |
| Model Number | ASR004 |
| Connectivity Technology | Bluetooth 5.3, Wi-Fi 6, Ethernet |
| Controller Type | Google Assistant, Amazon Alexa, App Control |
| Audio Output Mode | RCA, Headphone, Coax, Optical, USB, BT, or DLNA receiver |
| DAC | ESS ES9038 Q2M |
| THD+N | -116dB |
| SNR | 121dB |
| Max Audio Resolution | 24-bit/192 kHz |
| Display | 3.5" Touchscreen |
8. Warranty and Support
8.1 Warranty Information
The WiiM Ultra comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms and conditions. Keep your proof of purchase for warranty claims.
8.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact WiiM customer support:
- Online Support: Visit the official WiiM website for FAQs, user forums, and support resources.
- Email Support: support@wiimhome.com





