I just sold my Vick Audio Overdriver. I was getting tired of the RF and nothing I could do would stop it.
With that said, here are my thoughts about this style/format of pedal based on playing one for almost 1.5 years:
1.) It doesn’t matter how you configure this style pedal, which one you build, etc. Either way/model you do, if you crank the master and/or gain, it is OBSCENELY loud. Like louder than anything you’ve ever hit the front of your amp with. It’s not the most useful tone in the world but you HAVE to, IMHO, experience it at least once or twice in your life.
2.) 9vDC vs. 18 vDC doesn’t matter all that much with the gainier/fuzzier tones. When used as a clean boost or mild overdrive, I preferred 18 vDC.
3.) This is an exemplary clean boost, particularly into a mid focused amp. The whole amp seems to have more presence, note definition and body without altering the fundamental tone. This is a truly transparent boost/low gain drive of configured a certain way.
4.) You want that big bold medium gain drive like you hear on “Shine On You Crazy Diamond”? This and a loud, clean, mid focused amp will do it.
5.) I auditioned 1k, 2k and 5k A, B and C taper pots for the drive control. 2kB was the best overall. Using a C taper pot robbed it of the subtler clean boost range on the dial.
Anyway, just my $0.02. For the record, I’ll be replacing it with the EHX Crayon per the recommendations and reviews on Gilmourish.