The classic "go to" industry standard professional compressor
in great condition and stereo link-a-ble.
Vintage Digital say ...
The dbx Over Easy compression curve permits extremely smooth, almost inaudible compression due to the gradual change of compression ratio around the threshold, instead of the customary sharp threshold. This curve, plus dbx’s true RMS level detector coupled to a wide-range voltage controlled amplifier in a feed-forward circuit, makes it possible to achieve larger amounts of compression without adverse audible side effects.