Sound Impressions Hearing Centre Conveniently located in the Grosvenor Park Shopping Centre off of 8th Street East in Saskatoon, SK, Sound Impressions Hearing Centre is locally owned and operated by Cassandra Grabowski, Master Degree Audiologist. Cassandra and her staff bring years of training, expertise and positive attitude into each and every client visit. Born and raised in Saskatchewan, Cassandra is proud to offer Saskatoon and the surrounding area with the highest level of hearing care.