XY-T50L Adjustable Bluetooth Audio Digital Stereo Amplifier Module Audio Component Amplifiers for Home Passive SpeakersFeatures: High and bass independent adjustment, treble transparent, bass thick, good performance.Support mobile APP control, can be connected to mobile phone Bluetooth use, more convenient.The power amplifier board has overheat protection, circuit protection, over-voltage and under-voltage protection.The main knob adopts a rotary encoder to achieve 360° stepless tuning, which makes the hand feel smooth. Long press the switch machine, simple operation.Adopt advanced technology, stable power, fast speed and good use effect.Specification: Material:ABSPower Supply:Above DC5-26V/5AFrequency Domain:20Hz-30KHzOut Power:50W*2Size: Approx. 8.4 x 6.5 x 2.5 cm / 3.30 x 2.55 x 0.98 inchesPackage Includes: 1 Piece Stereo Bluetooth Power Amplifier Boardnote: Please allow 1-2cm errors due to manual measurement. Because of the different display of each computer, the pictures may not reflect the actual color of the item.