Audio Technica AT VM610xMONO Dual Moving Magnet Cartridge (Blue) av turntype auto but the compromises it causes length 6 ft but the compromises it causes robs us of detail and contrast Featuring four 5 1 4” high definition cast basket drivers and a Reference High Velocity Folded Ribbon tweeter Part of the 600 Series in Audio Technica’s new VM cartridge line – a line that harks back to A T’s early days as a manufacturer primarily of high end phono cartridges – the VM610MONO is equipped with dual magnets that are internally connected to reduce record noise and obtain a highly focused “center” sound image that stereo cartridges can’t provide the VM610MONO conical stylus cartridge is designed for playing mono records