30W Mini High-power 2.1-channel Digital Audio Amplifier Board Red Model : 03100440 . Quantity : 1 pcs . Color : Red . Material : PCB & Plastic & Iron . Input Voltage : 10-18 V . Output Voltage : 15 V . Quiescent Current : 60mA . Maximum Output Power : 30 W . Output Impedance : 8 ohms . Conversion Efficiency : 90% . Frequency Response : 20Hz to 20KHz . Dimensions : (1.96 x 1.96 x 0.39)" / (5.0 x 5.0 x 1.0)cm (L x W x H) . Weight : 1.23 oz / 35.0 g . Package Includes: 1 x Board Module .