Add-on: Spectrum Analyzer and Graphic Equalizer, Total Recorder - captures any audio from the Internet, records audio from CD, microphone, line-in, converts any sound formats to WAVE file. Phone recording system.
Rockville REQ42-B 2 x 21 Band Home Theater Equalizer w/ Audio Spectrum Analyzer
BSR EQ-3000 Stereo Frequency Graphic Equalizer Spectrum Analyzer - BlackのeBay公認海外通販|セカイモン
Mackie Quad EQ 4 channel graphic equalizer and real time spectrum analyzer | eBay | Spectrum analyzer, Audio, Equalizer