• Output interface: speaker output port x 2 groups (one group for left and right channels), it is recommended to connect 4 ohm 5W-50W power speakers for use
• Users can freely switch between CLASS AB or CLASS D working modes according to sound preference and power collocation
• The power switch and the volume knob are integrated. When the sound is adjusted to the minimum, turn it counterclockwise. When you hear a clicking sound, it is turned off. Turn clockwise to turn it on
• Powered by a Micro 5p interface, an ordinary mobile phone charger 5V 2A charging cable can be used
• The audio signals of mobile phones, laptops, and tablets can be connected to the output of the stereo power amplifier through a 3.5mm audio cable
• The power switch and the volume knob are integrated. When the sound is adjusted to the minimum, turn it counterclockwise. When you hear a clicking sound, it is turned off. Turn clockwise to turn it on

Specifications:

• Product name: LTK5328 Stereo Power Amplifier Board
• Product size: 54 x 33 x 15mm
• Product parameters: 4Ω2x5W
• Power interface: Micro 5p (reserved 2.5mm welding port)
• Input voltage: 3.7V-5V
• Amplifier working mode: switchable class AB and class D
• Signal-to-noise ratio: 90db
• THD+N:-70db
• Crosstalk: -86db
• DNR: 91db