The paper introduces CORPRES - COrpus of Russian Professionally REad Speech developed at the Department of Phonetics, Saint Petersburg State University, as a result of a three-year project. The corpus includes samples of different speaking styles produced by 4 male and 4 female speakers. Six levels of annotation cover all phonetic and prosodic information about the recorded speech data, including labels for pitch marks, phonetic events, phonetic, orthographic and prosodic transcription. Precise phonetic transcription of the data provides an especially valuable resource for both research and development purposes. Overall corpus size is 60 hours of speech. The paper contains information about CORPRES design and annotation principles, and overall data description. Also, we discuss possible use of the corpus in phonetic research and speech technology as well as some findings on the Russian sound system obtained from the corpus data.