M-Audio StudioPhile Q40 is a set of studio headphones known for their accurate sound reproduction and comfortable design. 

They're often favored by audio professionals and enthusiasts for mixing, mastering, and critical listening tasks. 

The Q40 headphones are known for their detailed sound, deep bass response, and closed-back design which helps isolate external noise. They're suitable for various audio applications, including music production, sound engineering, and casual listening. The build quality and durability of the StudioPhile Q40 make them a popular choice among users who demand reliable and high-quality audio equipment.

Condition: Used. Tested. Works great.