this be the consumer version of Sony 's professional mdr-7506 phone , widely use in the film and broadcast industry , which be standard issue at the radio station where I work . due to the shallow ear cup , I find they uncomfortable after about two hour . but they be rugged , compact when fold , and the coil cord be top . however , I have never be content with they sound . the high end be exaggerate . this can be useful for location recording , as it accentuate hiss and other unwanted noise . however , I can not recommend mix with these because it be hard not to overcompensate for they inherent brightness , and the strong high frequency quickly induce listen fatigue . these phone have be in production for two decade , but I prefer they little brother , the discontinue 7504 model , which have a more balanced sound . that say , I have not yet find a good , affordable alternative to the mdr-7506 -lrb- a.k.a mdr-v6 -rrb- . as other have note , the only difference between the v6 and 7506 be a gold-plated plug adapter , the length of the warranty , and whether the sticker on the ear cup be marked `` Professional '' or not .