I find it interesting that no one is asking you what kind of cartridge you are using. If its a MM cartridge you have to take into consideration the resistance of the I/C to insure that you have a good match. If it is a MC you want to take into consideration its capacitence (along with any other loading the cartridge may need, usually via resistors at the phono pre amp). But, hey, what the hell, for MC cartridges I use Cardas.