Never played a real Uni-vibe. Heard plenty of great demos (and records) but that was the sound I was searching for. This thing is pretty rockin'. I'm not too sure what year it is, but on the inside of the pedal, on the side is VIII. Not sure if that is a year or version or what. Anyhow, it is very balanced. No volume loss or tone change as in too much bass or treble. It's a pretty big pedal, but not heavy at all for its size. There is a trim pot to tweak it, but I'm not gonna mess with it because what it has going on right now is pretty great. These units are no longer made and the ones with the wild paint jobs can go for big money, with the same sound. I got a great deal on this one. Super excited and believe this will be great for any vibe needs for a long, long time.