I bought the FET Preamp kit to put together for a couple reasons - it looked like an interesting boost, similar in concept to my TC Electronic Integrated Preamp, and I wanted to try it. And partly because my TC Integrated Preamp is broken and I want to fix it, and I've never soldered on PCB's before. So this was practice. Turns out soldering on PCB's is piss-easy. It's just paint-by-numbers, all the parts have a labled hole they go into. The hardest part of the build was getting the damn pcb-mounted pots into the correct position. resistors all in, so far so good... skip a few steps, everything in but the pots... heres a gut shot. Not the cleanest work, but also its my first day, cut me some slack. Clearly I should have used much shorter wire for the power and in/out jacks. I do like all the connections at the top of the pedal, much cleaner looking and easier to manage. But, that area is super crowded as you can see. It was a pain to get the damn pcb in there with all the wires hanging off, and with the power jack in place. Also, the in/out jacks have to be positioned correctly so that they don't hit the PCB when you plug a cable in. all labeled up. The LED isn't that bright, which is good for me as I don't play live, and I don't like being blinded in my spare room. As far as sound goes, its a pretty cool boost. I really like the model of this in the axe fx ii for boosting high gain amps, usually in the unit, I put drive at 0, level at 10, bass at -12db, and treble at 0 or +2db or something. It makes a cool clean eq boost, similar to my integrated preamp. This is a bit different, its not as clean as the axe fx model. With the volume set as shown in the picture, its like having drive on 5 in the axe fx (not a lot of grit, but a little). Also this has a lot more volume on tap than the axe fx model. Like 26 db or something. The EQ is pretty cool, not as drastic sounding as my TC Electronic Integrated Preamp. I have the bass at 0, treble up a little bit, and it tightens up the amp decently well, but still lets through some bottom end. It can get sludgy though, with too much gain. The low cut switch is good for cutting a little more bottom end out. The controls are about as neutral as you can get with the treble and bass at noon, and volume at about 9:00. Just for comparisons sake, and based on the last time my Integrated Preamp worked correctly, the Integrated Preamp can cut or boost way more on the treble and bass controls, and it is way cleaner, whereas this distorts when you get the volume up. Not surprising given the Boss FA1 (which this is a clone of) was originally some low-rent belt-buckle amp that ran through a 2" speaker. I don't think sound quality was high on the list when it was designed, but hey-ho, it worked out in the end, and they made a cool boost. Now its time to order a bunch of spare parts and get to fixing my TC Integrated Preamp, so I can do a real comparison!