Hello, Last year I purchased the Seventh Circle Chasis, A12, & N72 in kit form. Put them together, no problems, sounds and works extremely well. I plan on filling the chassis with one more of each for pairs of each pre. Just curious if anyone out there uses or have used the J99. I know the John Hardy based pre's are supposed to be excellent. Can anyone summarize what to expect from these preamps? As a sidenote: if anyone is considering these preamps I highly recommend them. If your into building your own gear, it is a great project that has proven to be very usable in many many situations. I am also open to the idea of anyone who wants to contribute to my additions of gear. If you want to send a non-deductable, no refunds, check or via paypal money, feel free. This will help me to further my addiction for gear that contains blinking lights, meters, and knobs of all shapes. - hey I can try right?