New kit for building an audio spectrum analyzer with a real-time audio level display. Powered by a DC 9-12V supply, it provides immediate visual feedback on frequency content and signal level. The kit format supports hands-on assembly and learning, making it suitable for hobbyists and students. Benefits - Real-time spectrum visualization to analyze equalization, detect frequency imbalances, and verify signal integrity - Live audio level display for quick monitoring of loudness and dynamic range - DIY assembly experience that enhances understanding of signal processing and enables possible customization - New, ready-to-build kit for reliable experimentation Specifications - Model: kit - Condition: New - Supply voltage: DC 9V-12V - Features: audio spectrum analyzer, audio level display Use scenarios - Debugging and tuning home audio systems, amplifiers, or speaker setups - Educational demonstrations in classrooms or maker spaces - Prototyping and testing new audio devices and circuits