Not sure if this is hardware or software and it is also not relevant for gigging - but - somebody might find this useful when working in a studio.
I notice that during October - IK Multimedia have a special offer (40% off) on their ARC Acoustic Room Correction system - including the correction microphone. Its 119.99 dollars/Euros for first time purchase or 89.99 dollars/Euros for a cross-grade from any other IK purchased product costing more than 99.99 dollars/Euros (presumably this means e.g. a sound library)
I hope this is of some use to somebody.