Digitally tuned cutoff frequency range 1.0 hz to 99.9 khz, operating temp range 0 degrees c to plus 50 degrees c, power requirements 105 to 125 or 210 to 250 volts 50 to 400 hz, 5.250 in. H, 16.625 in. W, 17.000 in. Deep, front panel controls and adjustments include 2 decade multiplier switches, six rotary decade switches, 2 three position function gain switches, 4 bnc coxial connectors for the input and output signals