$400 · Hewlett Packard HP 3582A 2 channel audio spectrum analyzer

Hewlett Packard HP 3582A 2 channel audio spectrum analyzer in good operational and cosmetic condition. It covers 0.02Hz to 25.5 KHz per channel and can measure signal correlation / response / gain / phase / noise, etc. between 2 stereo channels. Pic 1 shows a 5 KHz sinewave at 0 dbV with relative 2nd and 3rd harmonic levels. Pic 2 shows the scale illumination turned down and the 2 pull out quick operational guides. Pic 3 shows the internal random noise source feeding a filter and the corresponding filter output spectrum with marker readouts. The display is bright and sharp. The operation / service manual is not supplied, but can be found on line. The reference pull out should get you started. It's old school, but works fine. Local pick up only please.