Specification Brand : SPYMINNPOO BulletPoint1 : Rich Interface: This amplifier board has several interfaces with powerful functions and high compatibility. BulletPoint2 : AUX Audio Connection: Bass independent adjustment, 360 degree infinitely tunable sound quality is clear, the sound details, as if live music. BulletPoint3 : 2.1 Channel Bluetooth Efficacy: Bluetooth 5.1, AUX, U disk, USB sound card, cell phone APP high fidelity sound quality, passive speaker output. BulletPoint4 : Cell Phone APP New Upgrade: Support for Android for IOS system, APP visual play mode volume, sound, up and down song control, play pause, play mode to modify the Bluetooth name, set the connection password BulletPoint5 : Mechanism: This amplifier board is protected against overheating, overcurrent, short circuit and static electricity. Capacitance : 10000 microfarad ExternallyAssignedProductIdentifier : 9411581260973 ExternallyAssignedProductIdentifier1 : 7416961391881 ExternallyAssignedProductIdentifier2 : 07416961391881 IncludedComponents : see details ItemName : Power Amplifier Board, LT21 Bluetooth Audio Digital Amplifier Board Module 2.1 Channel 15W 30W with Bass Channel ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 1 ItemShape : 10000 ItemTypeKeyword : audio-component-amplifiers Manufacturer : SPYMINNPOO Material : electronic components MaximumSupplyVoltage : 33 volts_of_direct_current MaximumVoltage : 100 volts MinimumSupplyVoltage : 5 volts ModelName : SPYMINNPOOqu9mvtgsdr ModelNumber : SPYMINNPOOqu9mvtgsdr MountingType : Surface Mount NumberOfChannels : 2 NumberOfItems : 1 OperatingVoltage : 100 volts OutputPower : 30 watts PackageTypeName : Retail Box PartNumber : SPYMINNPOOqu9mvtgsdr ProductDescription : 1. 2.1 Channel Bluetooth Efficacy: Bluetooth 5.1, AUX, U disk, USB sound card, cell phone APP high fidelity sound quality, passive speaker output. 2. Rich Interface: This amplifier board has several interfaces with powerful functions and high compatibility. 3. AUX Audio Connection: Bass independent adjustment, 360 degree infinitely tunable sound quality is clear, the sound details, as if live music. 4. Cell Phone APP New Upgrade: Support for Android for IOS system, APP visual play mode volume, sound, up and down song control, play pause, play mode to modify the Bluetooth name, set the connection password 5. Mechanism: This amplifier board is protected against overheating, overcurrent, short circuit and static electricity.