After having watched the demos by Zach on his YouTube channel, I decided to get this boost for my classic rock and blues playing. The quality is flawless, and the sound is great. It gives your guitar a nice amount of bite, and the amount of volume boost available is huge. Just make sure to run it into an overdrive or a properly driven amp - otherwise it may sound quite harsh, as most treble boosters would. I run it into a tweed-style pedal before a Fender amp, and it sounds incredible. I also love the ability to switch the different boost modes; however, I find that with P90s, the more mid and bass-heavy modes are a bit too much for my taste. I have yet to try them with other single coils. But either way, I would recommend it!