Profile: Lindos Electronics specializes in providing audio test equipments. The minisonic MS20 is a combined oscillator and measuring set in a stand-alone unit, which is both compact and portable. It is a precision line-up tool, a stereo PPM, a balanced-unbalanced convertor (both ways), a stereo microphone pre-amp, a headphone amp, and a level convertor. Automated measurements can be made through the use of sequence testing.