The Product
The RumbleFX is a very unique product. Unlike with your traditional headphones which only allow you to listen to music, the RumbleFX allows you to feel the music. This new technology produced by Evergreen Technologies adds a sense of realism to games as well as music, movies, etc., instead of simply hearing sounds you can now feel them.

The RumbleFX works by use of a DSP which picks up the low frequencies in music which are often missed by traditional headphones. The headphones then transform these low signals into vibrations which the user experiences, adding a new sense of realism to pretty much everything.

What makes the RumbleFX even more fabulous is that it is compatible with any device that has a standard headphone output jack. Since everything is built into the headphone, so there is no need to install drivers or have special software. A truly plug and play solution.

The RumbleFX also features a control unit attached between the headphone jack and headphones, which features adjustment for the volume as well as the vibrations setting of the headphone. The vibration is controlled by a 3-position switch: off, level I, and level II. Setting the switch to Level I provides a moderate rumble while level II provides the full-blown rumbling experience.

The headphones themselves are very well designed. They feature padded earpieces, which fit very comfortably around the entire ear. Contrary to what you might think, the headphones are not that heavy. Although not as light as some headphones, I found them to overall be a lot more comfortable than most headphones.

Testing
I tested the RumbleFX on several devices: CD player, television, and PC.

CD Player:
The RumbleFX worked great when used in conjunction with a CD Player. I found the sound quality to very good. Songs that had a lot of bass produced a very rumbling experience. Some songs I had to actually turn the effect level down on after I saw portions of my brain on the floor. (Note: Joke) For a comparison I used the Plantronics DSP-500, a $139.00 set of headphones. I found that overall the RumbleFX provided a better quality of sound and bass than the Plantronics DSP-500.

Television:
The TV I have features a headphone output jack on the front of it so I though what better place to test out the headphones than on movies and TV shows. I found that the RumbleFX only worked well when watching music videos, action movies, thrillers, etc. Normal sitcoms and TV shows don't have a lot of low frequencies to provide the RumbleFX with something to work with.

PC - Gaming:
This was truly where the RumbleFX shined for me. Being a FPS fanatic the RumbleFX provided a great affect in all the games I tested like Counterstrike, Unreal, Operation Flashpoint, and Quake III. Games that incorporated EAX or A3D were even more amazing. Not only was I provided with positional audio but a sense of actual feeling. I also found that using the RumbleFX gave me an advantage over my opponents. For example, in Counterstrike, whenever an opponent shot, I was able to easily determine from which direction the shot was coming from.