Nobsound NS-21G Mini Mono Channel Amplifier for Subwoofers / Bass Shakers

Warm tips: Please connect only one input (RCA or AUX) at a time. Using both simultaneously may cause signal interference or mixing. Features Powerful Subwoofer Amplifier: Compact but mighty, the NS-21G is a 100W mono amplifier designed for passive subwoofers and bass shakers. Featuring the efficient TPA3116 Class D amplifier chip, it delivers strong and clean bass for home theaters, desktop systems, and gaming rigs.  RCA & AUX Input for Wide Compatibility: The NS-21G supports both RCA and 3.5mm AUX inputs, making it easy to connect with TVs, phones, tablets, computers, CD players, and streaming boxes. Its dual-input design ensures the subwoofer amp integrates smoothly into almost any home audio system.   Adjustable Low-Pass Filter: Customize your bass with the built-in 20-160Hz bass frequency cutoff filter. It makes sure only the deep bass sounds go to your subwoofer, so the bass sounds fuller and doesn't overlap or mess up the sound from your main speakers — a must for cl