Sonodore microphones are manufactured in Holland by Rens Heijnis Audio Electronics and are renowned among top professional audio engineers, for their unrivalled sound quality. NorthStar's Bert van der Wolf has been involved in the development of these high quality recording tools from their conception in the early 90's, and has been using them in his own recordings for many years. The impulse response, overall frequency response and ultra low distortion characteristics of the Sonodore Microphones are amongst the best available in the professional audio market. These microphones produce a natural, clean and phase coherent sound, with accurate imaging and are ideally suited to meet the high standards required for High Resolution recordings in both SACD and DVD formats.