I have a G5 iMac with a digital line out/ headphone jack that looks like it takes just a 1/8" style plug. I am presently running a 6 foot cable with a 1/8" plug on one end to left and right channel interconnect plugs. My sony pre-amp also has coax. digital line in, and I was wondering if there...

What is the dB isolation of the HD-25 and how does it compare to the noise canceling headphones. I have been trying to convert a couple of Bose “tin can” users to real headphones nirvana and I have let them use my HD-25 and HD555 cans. They like the sound quality but are stuck on the isolation...

Can someone explain what balanced means and what are the pros and cons are to having a balance setup, or directed me to a web site on the matter. I own a set of HD-25, HD-555, and HD-580 all pushed by a bithead amp. My next upgrade will be to get a AC powered home amp and a set of HD-595s. I am...

I am looking for a solution for at least three people to listen to the same source at the same time. Some sort of amp with three or more outputs each with their own volume to account for headphones with different ohm ratings. I could also use such a device to compare different headphones. Is...

I was wondering what cable upgrade options are there for the Sennheiser HD-25? How is the left channel run to the other side, is it inside the plastic headband? Can a thicker cable be used, such as the HD-650 stock cable or are the plugs not compatible? Also, where can I get the velour pads for...