Sentry Wireless Headphones HO800

The Cons:
Entire set seems made of plastic and has a very non-sturdy "feel".
49.87Mhz operation. This is bound to pick up interference and hurt the range.
Requires one 9-VDC for transmitter and two AAA's for headset.
No AC "Wall Wart" provided. (9-vdc 200Ma neg sleeve hot tip.)

The Pros:
THEY ARE CHEAP!
THEY WORK!
AC power pin provided if you have an AC power supply.

Comments:
Okay, It is weird that Sentry didn't include a 9-vdc AC adapter. But the 200MA supply is cheap and easy to find. I had a couple laying around. I had a charger I used for AA Camera batteries so I bought a package of 4 rechargeable batteries when I bought the Headphones. Power supply solved!

I bought these to monitor source and recordings from Guitar that is routed through a USB Audio Interface on my computer. I sit maybe 6' from the transmitter. I have NO PROBLEMS with "range <smile>. There is no significant...Read more

Hey, i love them. They work over 100 ft. I put the transmitter in my backpack, put my backpack on and then i ride my bike. The headphones use 2 AAA battery's and one 9volt. I love then!

I thought these would work for 20-30 feet or so, but I can use them all around my house without any major interference. I say "major" because when I stand in a certain spot (and I have to try to), it cuts out, but if I shift a little, it's fine.
The tone quality is pretty good considering the price; sometimes there's good bass on it, sometimes there's not. I would recommend this to anyone that isn't tech-savvy - they're pretty easy to set up and use. One downside is that the transmitter runs on a 9-volt. It can be plugged in to the wall, but that cord isn't provided.
The only time there's static is when I turn the volume on the headphone all the way up, but I never need to do that - it's clear as a bell!