The present invention concerns an apparatus (1') and a method for NMR spectroscopy and/or NMR imaging of at least one sample. The apparatus of the invention comprises: at least one sample container (3) comprising a sampling volume (3a) which is designed to be filled by said sample and to be subjected to an electromagnetic radio frequency field, and a static probe comprising an energizing circuit for excitation of nuclei of said at least one sample by generating an incident radio frequency field at the Larmor frequency of said nuclei, and for reception of a return radio frequency field emitted by said at least one sample, said apparatus comprising at least one sensitive coil (6a') which is mounted closely around or in contact with said sample container and which is coupled to said static probe by an electromagnetic radio frequency field. This apparatus is characterized in that said sensitive coil is embedded in an inner spinning rotor (2) which is rotatively mounted inside said static probe and which is integral with said sample container, so that both the filling factor and the radio frequency field amplitude in said sensitive coil are maximized.