NTI Minilyzer ML1 Audio Analyzer

Measurement functions: Level RMS, Relative
Sound Pressure Level
Distortion Analyzer (THD+N), k2 - k5 harmonics
VU & PPM Meter
Speaker Polarity Test (for all speaker types)
Signal Balance Error
Frequency-/Time-Sweep Recording
1/3rd Octave Spectrum RMS & SPL
Scope

Minilyzer ML1 is the state-of-the-art analog audio meter that fits into the palm of your hand.
It provides you with a comprehensive set of functions essential for the analysis of professional audio systems.

The powerful Minilyzer continuously measures the audio signal and displays the desired results with all complementary information on an illuminated hi-res graphical LC-Display.
The Minilyzer and the MiniSPL form a comprehensive integrating sound level meter.