There recently was a thread on the same subject. Everything else being the same, a low output MC cartridge will resolve more detail because the lower-mass coil is mounted to the cantilever rather than the higher mass magnet. Since there is less mass, the cantilever, and therefore the stylus, will be able to respond more quickly, giving enhanced resolution that will translate into better detail, bass, dynamic range, etc. The downside is that a phono stage of higher voltage gain is required to give the same volume output. Recently with higher flux density magnets such as samarium cobalt and neodynium, higher outputs can be achieved with the same coil structure.
