Your voice is a combination of your pickups, strings, instrument materials and construction, and playing technique. Your ability to boost and cut the right frequencies as needed are key to controlling your voice. Check out the frequency response graphs below. The charts below show the frequency response envelopes of the different preamp choices. Don't worry if you don't fully understand the charts - there is more description on the pages that link from here. Click a graphic to get more info about each preamp and the controls and layouts available.