PAIR of Trident 80B EQ 500 Series Equalizer Modules. I have a really nice pair of. Equalisers here in tip top shape. These sound amazing on just about everything Ive thrown at them. I use them extensively on bass and have also found them great on vocals to add a nice hi end sheen. One of my other favorite uses is on snare going in. These allow you to bring out a nice "pop" whilst cutting unwanted frequencies. And of course, Ive also used these across my master bus with great success. These were bought maybe a year and a half ago and have never left my rack. NOTE: AEA preamp NOT included. IF YOU WANT THEM AS A PAIR CHOOSE 2 FOR QUANTITY AND MAKE YOUR OFFER FOR THE BOTH. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Signal Processors/Rack Effects". The seller is "spiral_house_resellers" and is located in this country: US. This item can be shipped to United States.