This is the latest version (though, a year old now) of the popular 10f drive unit in the Discovery line. The big difference is the smaller motor, physically, and the lowered high frequency distortion.

Reviewed here:
http://medleysmusings.com/10f8414g10/









PS: If you would like to help me keep up funds for testing, there’s a little ‘contribute’ button that goes through Paypal all the way at the bottom of every page. Any little bit helps.