CAD Audio MH320 Closed-back Studio Headphones (Discontinued) Leave a Comment / Uncategorized / By Denise / May 12, 2017 80 GEARANK 80 out of 100. Incorporating 20+ ratings and reviews. Street Price: $69.00 Manufacturer: CAD Audio Features Closed back, circumaural, precision built monitor headphone. Equipped with 45mm neodymium drivers Stainless steel, manganese and aluminum Ultra-soft leather earpads outfitted with high density memory foam Related Recording Gear Guides: The Best Cheap Studio Headphones Under $100 The Best Closed-Back Headphones for Recording The Best Microphone Pop Filters The Best Condenser Microphones Under $100 – XLR & USB The Best Audio Interfaces Under $200