Audeze MM-500 Professional HeadphonesA Serious Tool for Every Situation I rely on my MM 500 as much as the main monitors in my studio Manny Marroquin The MM 500 is designed to suit the requirements of long daily listening sessions under almost any condition. World class studio monitor? Check. Quick reference on the go? No problem. Deep late night listening? Done. With its ease of drive, comfortable fit and trustworthy sound, you can count on the MM 500 to deliver in every situation.