Description
COSMIC-108 / AT108 Bluetooth Audio Amplifier Board with USB, Type-C Power & TF Card | Stereo DIY Speaker Module with Control Buttons
Upgrade your DIY audio projects with the COSMIC-108 / AT108 Bluetooth Audio Amplifier Board 🔊 — a compact, feature-rich module designed for modern speaker systems, repair work, and custom audio builds.
From your images, this board comes with Type-C power input, USB playback, TF card slot, onboard control buttons, and speaker output terminals, making it a complete plug-and-play audio solution.
✨ Key Features & Highlights
- 📶 Wireless Bluetooth Audio Support
Seamlessly connect mobile, laptop, or tablet for wireless music streaming. - 🔌 Modern Type-C Power Input
Stable and efficient power supply via USB Type-C (5V) — no bulky adapters needed. - 💽 Multiple Playback Options
Supports:- USB Pen Drive
- TF Card (Memory Card Slot)
- Bluetooth Mode
- 🎛️ Dedicated Control Buttons (Onboard)
Easy operation with:- ▶️ Play / Pause
- ⏮️ Previous / Volume Down
- ⏭️ Next / Volume Up
- 🔄 Mode Selection
- 🔊 Stereo Speaker Output
Clearly marked:- B+ / B- (Battery/Input)
- SP+ / SP- (Speaker Output)
- 📡 Built-in PCB Antenna
Strong and stable Bluetooth signal without external antenna. - ⚙️ High Stability IC + Crystal Oscillator
Ensures:- Better sound processing
- Stable frequency operation
- Low noise performance
- 🔧 DIY Friendly Design
Clearly labeled solder points make installation easy for:- Technicians
- Students
- Hobbyists
📊 Technical Specifications
| Feature | Details |
|---|---|
| Model | COSMIC-108 / AT108 |
| Power Input | 5V DC (Type-C USB) |
| Audio Input Modes | Bluetooth, USB, TF Card |
| Output Type | Stereo (L/R Channel) |
| Speaker Output | SP+ / SP- terminals |
| Control Interface | Onboard Push Buttons |
| Bluetooth Antenna | Built-in PCB Antenna |
| Oscillator | External Crystal Installed |
| Board Type | DIY Audio Amplifier Module |
| Connectivity Ports | USB Port, TF Card Slot, Type-C Port |
| Application Level | Beginner to Professional |
🎯 Applications (Where You Can Use It)
- 🔈 DIY Bluetooth Speaker Box Making
- 🔊 Portable Speaker Systems
- 🏠 Home Audio Projects
- 🚗 Car Audio Modification (5V systems)
- 🔧 Audio Repairing & Testing
- 🎵 Mini Music Player Projects
- 🧰 Electronics Workshop Setup
💡 Why This Board is Special?
- ✅ Latest Type-C Power Input (Modern & Reliable)
- ✅ All-in-one Music Playback + Amplifier Module
- ✅ Compact size, perfect for tight spaces
- ✅ Ideal for YouTube DIY Projects & Repair Work
- ✅ Clean PCB layout for easy troubleshooting
⚠️ Important Notes
- 🔸 Requires 5V stable power supply
- 🔸 External amplifier stage may be needed for high-watt speakers
- 🔸 Proper speaker matching recommended for best sound
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