Feature:1. HIGH POWER AND WIDE VOLTAGE: ZK 302T as a compact 2.0 channel bluetooth amplifier board with small size and many functions. Its peak power (PMPO) is up to 30W plus 30W and 924V wide voltage input.2. MULTIPLE INPUT MODES: Input modes include Bluetooth, AUX and USB sound card, USB flash drive modes, which can be connected to playback devices such as cell phones, tablets, CD players, computers, USB flash drives and more.3. TREBLE AND BASS CONTROLS: Bluetooth power amplifier board is designed with control knobs for treble and bass, stereo dual channel output for a more layered sound and more powerful bass.4. APP FUNCTION: By downloading the dedicated APP, you can make in depth settings for the amp board through the mobile APP, such as customizing the bluetooth name, setting the bluetooth passcode, turning on, off the prompt sound and so on.5. APP FUNCTION FOR ANDROID PHONES ONLY: At present, the APP function is only applicable to for Android cell phones, if your cell phone is not an for Android phone, you will not be able to use the APP function.Specification:Item Type: BT Amplifier BoardMaterial: PCBSupport: For WUZHI AudioAPPSound Input: AUX, BT, USBBT: 5.0Channels: Left and Right Dual ChannelOutput Power: 30W x 2Heat Sink: Large Heat SinkApplicable Speaker: 4-8, 10-50WGuard Mechanism: Over Voltage, Under Voltage, Overheat, Short CircuitAdapted Power Supply: 9-24VPackage List:1 x BT Amplifier Board3 x Knobs1 x Heat Sink1 x Screwdriver1 x Terminal Block2 x Case13 x Screw4 x Stud