The COBRA collaboration aims to search for neutrinoless double beta-decays of several isotopes using CdZnTe semiconductor detectors. To improve the sensitivity on the half-lifes of such decays, a large (2×2×1.5)cm3 CdZnTe detector for applications in gamma-ray spectroscopy and low-background operation is investigated.The electric properties as well as the spectroscopic performance of the detector, such as energy response and resolution, are characterized. In addition, several measurements are conducted to investigate the operational stability. Furthermore, the possibility to identify multiple-scattered gamma-rays with the new anode design is studied.