Up for sale is a good condition, wonderful sounding Revive Audio Modified DBX 3BX, Multi-Band Expander that sounds incredible and is in very good shape for its age!
The service includes: Burr Brown input and output stage modification, PSU upgrade, complete re-cap of all the electrolytic capacitors and cleaning of all electro-mechanical pots and switches.
So the modifications:

Burr Brown Opamps were put in to replace the old 4558's in both the input and output stages as well as summing sections
All of the electrolytic's were replaced with high quality upgrades and noise reduction is applied in all bands and all local power locations (bypassing)

Complete Rechip for all crossover bands.

A PSU modification with bypassing for the lowest possible noise.
A Whole lot of other great modifications as well for the lowest possible noise and highest possible bandwidth and headroom.

They simply sound exceptional with all of the modifications and refurbishments.
The Burr Brown modification on these units in conjunction with the re-cap just makes these units sound warm, large, dynamic and musical.
It can best be described as being: Warmer, with broader frequency response, increased headroom and a better three dimensional image.
It has been professionally modified by our tech and given the seal of approval to go to work at you home or in your studio. These are fantastic sounding units and are a highly desired piece of vintage gear. 

Comes with a full 1-year warranty
Sale includes: Revive Audio Modified Vintage DBX 3BX Three Band Expander