Neumann KMR 81 i    
Available manufacturer's documents for this product:
 - Neumann KMR 81i and KMR 82i Overview (html) English
 - Neumann KMR 81i and KMR 82i Technical Specifications (html) English
 - Neumann KMR 81i Polar Pattern and Frequency Response (html) English
 - Neumann KMR 81i and KMR 82i Brochure (pdf) English
 - Neumann KMR 81i Technical Manual and Spare Parts (pdf) English
 - Neumann Accessories General Catalog (pdf) English