SAE 5000, Impulse Noise Reduction System Condition:* Used, Removed From Service In Working Condition. * Tested Fine For Basic Operation. Sold As-Is. As Pictured. Additional Notes:* THD (Total Harmonic Distortion) at any level to rated output from 20 Hz to 20 kHz: less than 0.1%* IMD (Intermodulation Distortion) any level or rated output with any 2 mixed frequencies between 20 Hz to 20 kHz at 4/1 Voltage Ratio: less than 0.1%* Signal-to-noise ratio: greater than 90 dB below rated output* Rated Output: 2.50 Volt RMS* Frequency Response: 1dB 20 Hz to 20 kHz* Output at clipping: greater than 9 volts into 10 Ohms* Input Impendance: 75 kOhms* Output source impedance: 500 Ohms* Output Lead Impedance: 600 Ohms Minimum* Insertion Loss: less than 1 dBSAE 5000