Chip: TPA3116D2 Power Amplifier Chip One unit, multiple products Easily identify and manage multiple units by setting a unique Bluetooth name for each product. Bluetooth and control Modify the Bluetooth name. Set the connection password. Turn the sound output on or off for convenient control and security. Multifunctional main knob Classic appearance with a rotary encoder 360degree continuous (stepless) adjustment for precise level control Smooth feel with singlebutton operation; simple and convenient to use Applications Home stereo or living room systems with multiple amplifiers, where each unit can be named for quick selection. DIY speaker projects or audio installations requiring precise, easytouse gain/volume control. Small venues, classrooms, or offices that deploy several amplifiers and need secure, identifiable Bluetooth connections.