I'm looking for an old Radio Shack (stop laughing) Optimus eq/booster, it was a push-button type (no knobs), had LEDs that showed you what your levels were, I don't recall if it had a spectrum analyzer, had a set of RCA inputs along w/ the typical speaker ins/outs of the time. Would have been circa 1994 or perhaps a bit earlier. I believe it would have been there top of the line or near it, might have put more power to the rear outs than front. I don't recall how much. Any ideas?