Why do wireless Headphones hiss and wireless mics don't?

Every set of commercial stereo headphones I have tried suffer from background hiss and noise as if the technology is not as mature as wireless mics, although I find that hard to believe.

Reviews of wireless headphones often show a con as hiss.
The nady pem-500 eim box is said to be hissy.

I setup a stereo transmitter (for use in a car) in my studio with a radio as a receiver and there was the hiss and spitting sound as i walk around as I have heard on every system I tried.

I have a reason for wanting wireless headphones. Just curious about the state of the technology.

Thanks.

:Ron

Have you tried an IEM system instead of "wireless headphones"?  I suspect you're dealing with cheapo RF design and no companding.

Yeah,

Thanks for the reply.

The nady pem-500 eim box is said to be hissy and while it's the bottom of the eim system line, goodness, the ne571 has been out now for what seems like forever, so there is no no excuse for hiss anymore.

My wonderment is the fact that a mic and guitar have a feeble level compared to the line drive we hit the pem boxes and fm ipod transmitters with, yet the mic and guitar transmitters use companding and are quiet as can be.

A stereo compander cannot add that much to the cost of a box.

bitman said:

The nady pem-500 eim box is said to be hissy.

Click to expand...

Nady gear is unreconstructed CRAP.

As Christgau would say in the Village Voice, a Must To Avoid.

-a