The Fulltone Mini Dejavibe, an older, 2001 model, and a current Stereo model, played in MONO. Didn't expect there to be a big difference between the two, but guess what? There is! The current version is brighter and has a more rich harmonic flavor to it, and the older gold big box version is smoother and warmer. I like em' both...too bad I can't play the style of guitar that lends itself to demonstrating these killer stompboxes...oh well! I used a http://www.kingbeeguitars.com Relic Telecaster and a http://www.jaguaramplification.com Jaguar Twin Amplifier , 2x10 combo.