GT66 ???????????????????????????? GT66 ????????????????????? ?????????? Gt66 ??????????? GT66 ???????????? GT66 ???????????? GT66 - ??????????? ???????? ?????????? ????? Gt 66 - ????????????? GT66 ????????? Gt66 ?????????????????????? ?????????????? - ???? 24 ???????The Groove Tubes GT57 microphone.Image: Mark EwingThe GT55 & GT57 are both supplied