Through the end of 2015, when you buy a qualifying Audio-Technica 40 Series studio microphone you’ll be able to redeem an offer for a free pair of ATH-M50x professional studio monitor headphones (black version). What better way to have a truly professional studio mic and headphone setup. 
Qualifying mics include the AT4033/CL (classic version of the AT4033), AT4047/SV (silver), AT4047MP (silver, multi-pattern), AT4050 (multi-pattern), AT4050ST (stereo), AT4060 (tube), AT4080 (bidirectional ribbon) and AT4081 (bidirectional ribbon, pencil design) microphones.
Just purchase one of these microphones from an authorized A-T dealer in the U.S. and its territories during the rebate period will be eligible for a free ATH-M50x. There is no limit on the number of free ATH-M50x headphones you can qualify to receive. 
For complete details go to