Texas Special Instruments is the exclusive distributor for Grason-Stadler, Interacoustics, Maico Diagnostics, Micromedical, MedRx and Amplivox products for the State of Texas. These companies are part of the Diagnostic Group (Eden Prairie, MN) and are wholly owned by the William Demant Group (Smorum, Denmark). We offer a complete solution for those seeking to purchase or who are in need of support of the products manufactured by the aforementioned companies.