Audio Analyzer, Programmable, 10 Hz to 140 KHz, Sensitivity 3 mV, AC Level Measurement Range 3 mV to 300 V F.S. ( 6 Ranges ), DC Level ( 3 Ranges ), Distortion Measurement Range 0.0001% to 100.00% 400Hz High Pass Filter "A" Weighting Filter Availability: Usually ships the next business day. 64380