DBX 266XSV Dual Compressor GateHaving compression in your audio chain gives you the ability to smooth out uneven levels, add sustain to guitars and fatten up your drums. It also makes it easy to bring vocals to the front of your mix adding greater clarity and making them stand out from the surrounding instruments. dbx knows compressors after all we invented them! The 266xs is the latest in a long line of the world's most successful compressors from the inventors of the technology.