LED Music Spectrum Analyzer & Audio Level Meter – DC 5V–12V
LED Music Spectrum Analyzer & Audio Level Meter – DC 5V–12V
LED Music Spectrum Display Analyzer & Audio Power Level Meter
Bring your audio setup to life with this dynamic LED Music Spectrum Analyzer and Audio Power Level Meter. Whether you're building a DIY electronics project, enhancing a DJ booth, or testing sound levels in your space, this compact module delivers a visually captivating, real-time LED response to sound — dancing to the rhythm of every beat.
Made in Mainland China.
Key Features
- Dynamic LED Display: LEDs illuminate from bottom to top in response to sound volume, creating an engaging visual display that pulses with the music — perfect for DJ sessions, home audio setups, and DIY builds.
- Independent Comparator Circuit: Features a dedicated comparator circuit for a clear, structured understanding of audio signal flow and LED response principles — great for electronics enthusiasts and learners.
- Reverse Polarity Protection: Built-in reverse polarity protection diode safeguards the circuit from incorrect power connections, making it a reliable choice for DIY projects.
- Built-In Microphone: The onboard microphone senses ambient sound sources and controls LED flashing without requiring a direct audio signal connection — just plug in and go.
- Optional Line Input: Prefer a direct audio signal? Simply remove the microphone and connect an audio line input (e.g., from a phone or computer headphone jack) for more precise LED control. An adjustable potentiometer lets you fine-tune sensitivity.
- Adjustable Signal Sensitivity: The onboard multi-turn potentiometer allows approximately ten turns of adjustment — turn clockwise to increase sensitivity, counterclockwise to decrease.
- Convenient Power Options: Powered by DC 5V–12V via a built-in Micro-USB socket (compatible with standard phone charging cables), plus two reserved solder pad ports for custom wiring.
Specifications
- Power Supply: DC 5V – 12V
- Size: 10 cm (L) × 3 cm (W)
- LED Type: 5MM round-headed frosted LEDs (multiple colors available) — uniform, non-glaring light
- Input Options: Built-in microphone (default) or line input (microphone removable)
- Sensitivity: Adjustable via onboard multi-turn potentiometer
- Connection: Micro-USB socket + 2 solder pad ports
- Origin: Mainland China
What's in the Box
- 1 × LED Audio Power Amplifier Level Meter Module
Notes
Due to variations in monitor displays and lighting conditions, the actual color of the LEDs may differ slightly from photos. Please allow ±1–2 cm measuring tolerance due to manual measurement.
Learn More About Sound & Electronics
Interested in how sound level measurement works? Visit the CDC's resource on noise and hearing to understand how sound levels are measured and why they matter in everyday environments.
Frequently Asked Questions
Q: What power supply does the LED Music Spectrum Analyzer require?
A: The audio level meter operates on DC 5V to 12V. It includes a built-in Micro-USB socket, so you can power it directly from a standard phone charging cable. It also features two solder pad ports for custom hardwired connections.
Q: Can I use a direct audio line input instead of the built-in microphone?
A: Yes! The built-in microphone can be removed, allowing you to connect a direct audio line input — such as the headphone jack from a smartphone or computer. You can then fine-tune the LED response using the onboard adjustable potentiometer.
Q: Is this LED spectrum analyzer suitable for DIY electronics projects?
A: Absolutely. This module is designed with DIY enthusiasts in mind. It features reverse polarity protection, an independent comparator circuit, and accessible solder pads, making it an excellent component for custom audio visualizer builds, workshop projects, and electronics learning.
Q: How do I adjust the sensitivity of the LED level meter?
A: Use the onboard multi-turn potentiometer — it adjusts through approximately ten turns. Rotate clockwise to increase sensitivity (LEDs react to quieter sounds) and counterclockwise to decrease it. When adjusted to the minimum, a slight ticking sound from the potentiometer indicates you've reached the lower limit.