DBX DDP true stereo programmable gate, compressor, limiter, de-esser. and EQ (side chain or in-line). No original box or manual but you can download the manual (and spec sheet) from
this link.
For the past 3 months I've been tracking these on "that auction site" and the average selling price is $166.
This one is in excellent condition so I'm selling mine for $150 + shipping. PayPal or USPS money order only.