Dad's birthday is coming up and I thought I'd get him some wireless headphones to replace the wired ones he already has. Do you lose sound quality with the wireless units? If that's the case, I would rather just upgrade the wired ones he has now. The old guy drinks ALOT of coffee and watches ALOT of satellite TV (i.e., not much for music).

Anybody out there have some real knowledge/experience with these things?

Much appreciated.