If you've ever seen a Maestro effects unit it's likely to be the
Echoplex, a line of tape echo machines first built in the early 60's and manufactured right through till 1985. They made loads of others with the coolest logo and some great names: their stuff is much sought after by guitarists even though you can build clones yourself.
In the early 70s sax and clarinet players started to feel a bit left out of the effects loop, and wanted a piece of the jazz fuzz tremelo pie. Maestro came to the rescue with the Sound System for Woodwinds, a riot of pastel rocker switches and chunky silver knobs. We all know it could never make a sax sound like a bassoon, but the fun is in finding out how it tries to.
Here's your chance. Check out the seller's other items too. Makes me weep at the cost of international delivery.