Bookshelf speakers

🔥Welcome to Power Super! ✅Pack well and send in 2 days! ✅Every order can get one freebie! HKBH Digital Audio Amplifier Module 5W + 5W Dual-channel Stereo Mini Amp Board Amplify DIY Circuit Board for Bookshelf Floor Speakers Features: Dual-channel digital audio amplifier module with DC 5V working voltage & 5W + 5W output power. Equipped with black copper terminal blocks, imported KEMET speaker capacitor, large-capacity filter capacitor for channels and gold-plated audio input terminal blocks. With a input port that is available for 3.5mm audio cable, and a volume control knob(clockwise to turn volume up and counterclockwise to turn volume down). Features over 90% high efficiency, less than 10% general harmonic distortion, low quiescent current and noise suppression. Designed with input reverse connection protection, short circuit protection, over heat protection; what's more, EMI is allowed to pass. Additional function: 1. Available to connect amplifier type to choose the different function (MODE: high electricity level is Type D, low electricity level is Type A, B. Factory defaults high electricity level) 2. Available to add an external Shutdown (SD: the chip will be Shutdown at low electricity level, factory defaults high electricity level) 3. Available to add a Mute (the chip will be in mute mode when low electricity level, factory defaults high electricity level) Specifications: Efficiency: >90% General harmonic distortion & Noise: <10% Working voltage: DC 5V (please don't use more than 5V, or the IC will be burnt) Output power: 5W stereo (2Ω 5V) Input method: single-ended Item Size: 5.5 * 3.3cm / 2.2 * 1.3in Item Weight: 23g / 0.8oz Package List: 1 * Amplifier Board 1 * Users' Manual(English & Chi