Ad text from fmogearshop (also check the photos there):
Here's a vintage Carlsbro Suzz from the seventies. The name seems to imply that this would be some sort of fuzz pedal, don't you think? Alas, the circuit has more in common with an MXR Distortion + really. So if you're expecting some sort of nasty fuzz, you may be in for a let down. But if you look at it in the proper context, as more of a basic distortion, then it's not too bad at all. Add to that the collectibility of those funky enclosure Carlsbro pedals and you may have yourself a winner.