Features: Two Color 2x56-bit LED display presents cool stereo music spectrum visualizer Auditory Spectrum Analyzer it can display the strength of auditory signal in real time. LED display is clear and bright, can accurately show the music spectrum changes. Support two channel output, providing a more stereo,dynamic music visual experience. For auditory debugger and other users who have the pursuit of music visual presentation; electronic stage lighting engineer and other people,widely used. Specifications: Model：Music Spectrum Analyser Size：about 154x116x47mm/6.06x4.56x1.85in Support： Double-color 2x56bit LED Display Input and output port: stereo 2Sets per 3.5mm Maximum Auditory input voltages: 2.5Vrms Maximum Effective Auditory Input Voltages: 1.8Vrms Frequency 20~20Khz. Package Includes: 1Set Music Spectrum Analyser note: Due to problem of lighting effect there might be certain tolerances in product, please understand. Please allow 0-1cm error due to manuals measurement.