PAC AOEM-VET1 System Interface Kit (Add an Amp or Replace The Factory Amplifier in a Chevrolet Corvette) Interface allows for the replacement or addition of an amplifier in a 1997-2004 Chevrolet corvette with a premium Delco/Bose sound system Transformer isolated 20 - 20,000 Hz 4 channel interface Output connector: 16 pin / input connector: 18 pin