You should take your post to the PMI Audio Group forum which is here on this site and just down the street.I think they can answer any question you might have and theres a lot of Studio Project users that hang out there.

Studio Projects sent me a bunch of their mics to review and included were a pair of the C4's. I am very impressed with them and I think they measure up to mics costing as much a four times as much. They come in a matched pair with some really cool shock mounts, two sets of capsules, omni and cardioid, all in a handy case. The build quality of the pair I recieved was very good. Sonicly they stand up to pairs of AKG 451's and 460's I have here. Not the same but as good.

Kurt Foster

I have a T3

I own a T3 Studio Projects mic, and I absolutely love it. For the price, it is a damn fine vocal mic. I am going to buy more of their mics when I make my next purchase. Their customer support is unmatched. They stand behind their products. I recently shut a door on the cable that came with the mic, and fully expected to have to pay for another one since it was my fault. They didn't care. They sent me another one overnight at no charge. I will support them in the future for that kind of service alone.

Rob