Okay, I'm reading the post above me and I'm totally perplexed at the mis-information blasting the Heil TalkBox.
I have my Heil TalkBox right in front of me (Serial #AA34N934), so I actually OWN one.
I don't just "know a guy who had one once".
That being said, the Heil TalkBox does not have any power supply, so I have no clue how it would "suck juice".
Element?.... What "element"????
The Heil TalkBox is just a sealed, insulated box with a speaker inside. You put the signal into the box (using a standard 1/4" cable) and use another 1/4" cable to go out to your speaker enclosure. The sound that comes out of the tube would't rattle out your fillings in 100 years of constant use, so the "guy" must've had a lousy dentist.
I've used
my talkbox with keyboards, as well as guitar... and it's a blast to use.... I LOVE IT!!!


In all honesty, I have no idea about the "Rocktron" unit, it might be a wonderful piece of equipment.
But I just felt I had to correect the mis-information above.
There's actually been posts here about how you can make your own TalkBox, and it's really not that difficult to do.
Do a search and maybe you'll find some useful info on constructing your own unit.
As for the Heil TalkBox being difficult to use... you'd have to be retarded not to be able to use this thing.
As a matter of fact, it does't even come with instructions because the two set-up options are printed right on the bottom of the box with pictures of how to use it!
There's a "basic" set-up, and a "pro" set-up.
Here's an original song that my partner and I did in which we used the Heil TalkBox during the bridge of the song....
http://artists.mp3s.com/artist_song/1492/1492252.html