I got a second hand Washburn with Seymour Duncan pups on it and I wasn't impressed how was the sound out of it. Not like I'm a professionist (more likely an sunday player) but the price was really low and guitar was in pristine condition so I bought it. The wiring was really bad and the pots were something no name and really tiny. So, I bought this pots, remade the wiring with SD wiring specs and damn, thru my computer with GR5 (dont have an amp yet) it's a big difference in how it sounds. It's a different quitar to be honest and high sounds are more clearer, changing the tone is actually making a difference (I got a Orange drop 22nf on it) and overall the quitar is turning out to be a 100% best deal. I don't know if the new wiring made this big change in sound, but I guess this new pots and cap made a huge difference. On the downside, I had to make the holes in the guitar and knobs a bit bigger for them to fit, but I knew that before ordering, couldn't find pots to fit exactly.