COSMIC-105 / AT105 Bluetooth Audio Amplifier Board with USB, TF Card, AUX, Volume Control & Button Panel for DIY Speaker System

COSMIC-105 / AT105 Bluetooth Audio Amplifier Board with USB, TF Card, AUX, Volume Control & Button Panel for DIY Speaker System Upgrade your audio projects with the COSMIC-105 / AT105 Bluetooth Audio Amplifier Board �� — a compact, feature-packed solution designed for DIY speaker systems, portable audio devices, and repair applications. This board comes with multiple input options like Bluetooth, USB, and TF Card, making it extremely versatile. With built-in control buttons and volume knob, you can easily manage playback without needing external controls. Whether you are a technician, hobbyist, or electronics repair expert, this module is a perfect choice for creating or repairing audio systems with professional-level performance ��. ✨ Key Features & Highlights �� Bluetooth ConnectivityEasily connect your smartphone, laptop, or tablet wirelessly. �� Multiple Input OptionsSupports USB Drive TF (Memory Card) playback. ��️ Built-in Volume Control KnobSmooth analog control for precise volume adjustment. �� Onboard Control Buttons MODE / Play-Pause Previous Track Next Track Power LED Indicator �� AUX / Line Input SupportAllows external audio input connection. �� Stereo Speaker Output PinsDedicated connectors for left and right speakers. ⚡ DC Power Input (5V)Powered via Micro USB port for easy compatibility. �� Compact & Durable PCB DesignIdeal for tight installations and long-term use. ⚙️ Technical Specifications Feature Details Model COSMIC-105 / AT105 Input Voltage DC 5V (Micro USB) Connectivity Bluetooth, USB, TF Card Audio Output Stereo (L & R Channel) Control Push Buttons Volume Knob Ports USB Port, Micro USB, TF Slot Functions Play/Pause, Next, Previous, Mode Indicator Power LED Mount Type PCB Mount Application Type DIY Audio / Repair / Speaker �� Applications �� DIY Bluetooth Speaker Projects �� LED TV / Audio System Repair �� Portable Music Player Systems �� Home Audio Amplifier Setup �� Car Audio DIY Modification �� Electronics Training & Practice �� Why Choose This Board? ✔️ All-in-one audio solution✔️ Easy to install and use✔️ Supports multiple media formats✔️ Ideal for technicians & students✔️ Compact size with maximum features �� Important Notes ⚠️ Requires proper amplifier stage for high power output ⚠️ Ensure correct polarity while connecting power ⚠️ Speaker connection should be done carefully