DBX - The name that defines compression. You've seen DBX compressors all over the world, with major tours, in world class recording studios, radio and TV broadcast facilities and anywhere audio professionals ply their tastes. The 1066 lets you A-B the inputs (with and without side chain processing) without re-patching and a flexible expander-gate works over a 70db range. Making-up gain or matching levels over a 40db range are just a few of the great features you'll find in the new 1066. Balanced or unbalanced 1/4" TRS or balanced XLR connectors in and out.