1. Introduction
The 1Mii DS220 is a high-fidelity Bluetooth audio receiver designed to upgrade your existing home stereo system with modern wireless capabilities. Featuring advanced Bluetooth 5.1 technology and audiophile-grade DAC chips, it delivers stable, high-resolution audio streaming from your Bluetooth-enabled devices to your speakers or amplifier. Enjoy lossless music with support for LDAC, aptX HD, AAC, and SBC codecs, all managed through an intuitive OLED display and EQ modes.
2. Package Contents
Please check the package carefully to ensure all items are present:
- 1Mii DS220 Wireless Audio Adapter
- USB Power Cable
- 3.5mm Female to RCA Male Cable
- RCA Male Cable
- Optical Cable
- Self-adhesive feet bumpers
- User Manual (this document)
Note: A power adapter may or may not be included depending on the specific variant purchased (e.g., 'With US Plug' or 'With EU Plug'). The 'Without Plug' variant does not include a power adapter.
3. Product Overview
3.1 Front Panel and Controls
- M Button: Mode selection and power control.
- Power/Bluetooth Indicator: Shows device status.
- OLED Display: Shows song name, sampling rates, Bluetooth codec, and music style.
- Volume/EQ Knob: Adjusts volume and cycles through EQ modes.
3.2 Rear Panel and Connections
- DC 5V: Power input port.
- OPT OUT: Optical digital audio output.
- R-RCA OUT-L: Analog RCA audio output (Right and Left channels).
- USB IN: USB Type-C input for data (e.g., connecting to a computer for USB DAC mode).
4. Setup
The 1Mii DS220 is designed for easy plug-and-play integration into your home audio system.
4.1 Connecting to Power
- Connect the provided USB power cable to the DC 5V port on the rear of the DS220.
- Plug the other end of the USB cable into a 5V USB power source (e.g., a USB wall adapter, computer USB port, or a power bank).
4.2 Connecting to Your Audio System
The DS220 offers both analog and digital audio outputs:
- RCA Analog Output: Use the supplied RCA male cable (or 3.5mm to RCA cable) to connect the R-RCA OUT-L ports on the DS220 to the analog input (e.g., 'AUX IN' or 'LINE IN') of your amplifier, powered speakers, or stereo receiver.
- Optical Digital Output: Use the supplied optical cable to connect the OPT OUT port on the DS220 to the optical input of your DAC, amplifier, or soundbar.
4.3 Bluetooth Pairing
- Power on the DS220 by pressing the M button for approximately 2 seconds. The OLED display will light up, and the Bluetooth indicator will flash, indicating it's in pairing mode.
- On your source device (smartphone, tablet, computer), go to the Bluetooth settings.
- Search for new devices and select "DS220" from the list.
- Once connected, the Bluetooth indicator on the DS220 will turn solid, and the OLED display will show connection information.
5. Operating Instructions
5.1 Power On/Off and Factory Reset
- Power On: Press the M button for approximately 2 seconds.
- Power Off: Press the M button for approximately 4 seconds.
- Factory Reset: Press the M button for approximately 10 seconds. This will clear all paired devices and restore default settings.
5.2 Volume Control
Rotate the Volume/EQ knob clockwise to increase volume and counter-clockwise to decrease volume.
5.3 EQ Mode Selection
While in Bluetooth connection mode, you can adjust the audio equalization:
- Press and hold the Volume/EQ knob for approximately 2 seconds.
- Rotate the knob to cycle through the available EQ modes: NORM, ROCK, CLASS, JAZZ, DANCE, POP, BASS.
- Press the knob briefly to select the desired EQ mode. The OLED display will show the active mode.
5.4 OLED Display Information
The OLED screen provides real-time information about the device's status:
- Song Name: Displays the title of the currently playing track (if supported by the source device).
- Sampling Rates: Shows the audio sampling rate (e.g., 96K).
- Bluetooth Codec: Indicates the active Bluetooth codec (e.g., LDAC, aptX HD, AAC, SBC).
- Music Style: Displays the selected EQ mode.
6. Maintenance
To ensure the longevity and optimal performance of your 1Mii DS220, follow these maintenance guidelines:
- Keep the device in a dry environment, away from moisture and extreme temperatures.
- Clean the exterior with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Avoid blocking the ventilation slots to prevent overheating.
- Do not attempt to disassemble or repair the device yourself, as this will void the warranty.
7. Troubleshooting
If you encounter issues with your DS220, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Incorrect cable connection Volume too low Incorrect input selected on amplifier DS220 not powered on | Ensure audio cables are securely connected to the correct input/output ports. Increase volume on both the DS220 and your audio system. Select the correct input source on your amplifier/receiver. Press the M button for 2 seconds to power on the DS220. |
| Cannot pair with Bluetooth device | DS220 not in pairing mode Previous device still connected Bluetooth on source device is off | Ensure the DS220's Bluetooth indicator is flashing. Disconnect from any previously paired devices or perform a factory reset. Turn on Bluetooth on your source device and rescan. |
| Poor sound quality / intermittent connection | Distance too far Obstructions Interference Low-quality codec | Reduce the distance between the DS220 and your source device (max 30m/100ft line of sight). Remove any physical obstructions between devices. Move away from other wireless devices (Wi-Fi routers, microwaves). Ensure your source device supports and is using high-quality codecs like LDAC or aptX HD. |
| OLED display not working | Device not powered on Display issue | Check power connection and ensure the device is on. If still not working, contact customer support. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | DS220 |
| Wireless Type | Bluetooth |
| Bluetooth Version | 5.1 |
| Bluetooth Chip | Qualcomm QCC5125 |
| DAC Chip | ES9018K2M |
| Supported Codecs | LDAC, aptX HD, AAC, SBC |
| LDAC Sampling Rate | Up to 24bit/96 kHz, 990kbps |
| aptX HD Sampling Rate | Up to 24bit/48 kHz, 576kbps |
| AAC Sampling Rate | Up to 16bit/96 kHz, 264kbps |
| SBC Sampling Rate | Up to 16bit/48 kHz, 328kbps |
| Interface | 3.5 MM, USB |
| Audio Outputs | Optical (OPT OUT), RCA (R-RCA OUT-L) |
| Bluetooth Range | Up to 30m / 100ft (line of sight) |
| Sound Track | Double |
| Dimensions (L x W x H) | Approx. 86mm x 76mm x 23mm |
| Certifications | CE, RoHS |
9. User Tips
- For the best audio quality, ensure your source device supports and is configured to use LDAC or aptX HD codecs.
- Position the DS220 and your Bluetooth source device within a clear line of sight to maximize wireless range and stability.
- Experiment with the different EQ modes to find the sound profile that best suits your music genre and personal preference.
- If experiencing connection issues, try performing a factory reset on the DS220 to clear old pairings and start fresh.
10. Warranty & Support
The 1Mii DS220 comes with a 1-year warranty from the official store, covering manufacturing defects and malfunctions under normal use. For technical support, troubleshooting assistance, or warranty claims, please contact the 1Mii Official Store customer service.
Video Guide: For a visual guide on setting up and using your DS220, please watch the official product video below.
