yup, i have made _many_ excellent recordings with mine. in fact i purchased the last K3U circuit board in SennUSA inventory. Dwight then told me that senn no longer will support the K3U series. but i am sure you can get caps built as they still have parts...
but to be more clear, what i am offering is the ability to run the ME20-ME88's w/o the body (K3U or N or K2U or N)