For Christmas we bought my daughter Rock Band Special Edition for the Playstation 2. We had a small problem with the set because it comes with a guitar, a microphone and a drum set which is fine for 3 players but there are 4 of us so we needed and extra piece so we could all play together.At Walmart we found the Double Range wireless guitar controller on clearance for 29.97. It is a 4 in 1 controller and can be used with thePlaystation 2, Playstation 3, Guitar Hero or Rock Band. It has power thief technology and 2.4 GHZ. It comes with a strap, a sticker sheet to decorate it and yes, even batteries. According to the website this wireless guitar offers players for the first time in history a true full range of play via a second complete set of Feathertouch Fret buttons on it's Xtended Fret Button Array. I don't know what all of that actually means but I do know that my daughter prefers using this wireless guitar over the one that came with the Rock Band set. It also has a much cooler shape to it. We have had no trouble with it being compatible and it has worked like a dream. She is left handed and my son and husband are right handed and they can all use it just fine.
We wish it was compatible with the Wii which is the system we have Guitar Hero for but unfortunately it's not since the Wii system requires a special guitar to put the controller in. If you are looking for an extra guitar controller, check this one out.