Feature:1. Make your Speaker Wirelessly: With Q1 receiver board Integrated, You can stream your wirelessly to your speakers by Wifi, Bluetooth 5.0, for Airplay, DLNA and UPnP.2. More Space, More Creativity: The compact design will left you with more space for your wild and imaginative ideas, so you can DIY more freely and add features of your choice to make your speaker more powerful.3. New Upgrade: Q1 has a huge upgrade from the previous version. Now with Bluetooth 5.0, Pin connector for SPDIF output/OPTICAL output/R/L Output, ADC Key (for external button board ,Inclued.4. Superior Performance: 2x I/O for external control, such as volume knobs. Also can work as a USB DAC, so you can connect it to a PC and stream PC digitally. Now also support changing device WiFi SSID and Bluetooth name by mobile app,thanks to the upgraded CPU.5. DIY Rookie Friendly: If you are a DIY rookie and don't understand complicated ports. Don't worry, the ports we use are common ports and simply to use. Our app is user friendly as well. Using our remote control.6. Make your Family Proud of You: DIY a unique speaker for your family is very meaningful. Enjoying the music together and makes the family relationship more closely.Specification:Item Type: Bluetooth Receiver ModuleMaterial: PlasticConnectivity: Wireless IEEE802.11 b/g/n 2.4GBluetooth V5.0 SBC/AACPower Input:5V-1A / 2Pin Connector5V-1A Micro USB InputOutput:Simulate A 3.5 mm /4Pin ConnectorDigital I2S, SPDIF(44.1KHz)Frequency Response: 20Hz to 20kHzSNR: 100dB at 0dBFS, 1KHzTHD+N: 0.03%at 0dBFS, 1KHzMusic Format: FLAC/MP3/AAC/AAC+/ALAC/APE/WAVDecoding: Up to 24bit/192kHzAgreements: for AirPlay, DLNA, UPnP, Spotify Connect, QplayNAS: NAS That Support DLNA.Package List:1 x Bluetooth Receiver Module1 x 4Pin PH2.0 Line1 x 2Pin Power Cord1 x User Manual