Free Express Shipping! Rolls HE18 Two-Channel Audio Hum and Buzz Remover For Musicians and Audio Professionals, Helps Eliminate Ground Hum and Buzz, Dual Channel Operation, Inputs: 2 x 1/4" TRS, 2 x RCA, 3.5mm TRS, Outputs: 2 x 1/4" TRS, 2 x RCA,...