Ultimate Ears intros Vocal Reference Monitors to save singers from strain
 

Believe it or not, few musicians' in-ear reference monitors are tuned to emphasize voice; singers might have to compete for attention with wailing guitars and drums inside their own heads. Rather than risk artists shouting themselves hoarse, Ultimate Ears has launched its Vocal Reference Monitors. Separate versions for men and women focus on their typical vocal ranges and narrow the frequency range to between 90Hz and 8kHz, cutting out the more extreme sounds of instruments in the mix. The $999 price rules out the Vocal line for most garage bands -- it might, however, be perfect for pros whose screaming isn't part of the act.

http://www.engadget.com/2013/01/24/u...-save-singers/