I have a VPI 16.5 and the unit does exactly what it is reported to do....cleans the record completely!!! Excellent product.
However a caution. Be sure the felt pick up tube lies completely on the record to suck up all the wet cleaning fluid. I was starting to hear some major distortions in my playback system (I only use vinyl) and could not figure what the problem was. I finally saw, by peering down at the tube, that it was not sitting completely on the record and therefore leaving a moist (not seen by eye) sediment on my records. So what I had was 90% of the record was clean and fine but the first 10% of the disc-at the very beginning) had the remains of Disc Doctor. To add to my problem.....when I put it on to play it was OK...but the next time I listened to a record that had Disc Doctor remains....that's when I heard all this distortion. Boy, was this driving me mad!@!#!!!!
It was an easy fix ( just filed down the base of the tube) and cleaned all my record again!