I purchased the GT-10 to replace the ME-50 but I can not get the same quality of sound. I have a A/B switch to click between the two pedals to hear the sound. It seems to me that the ME 50 has a pure sound you can hear every detail the pick does, and the GT-10 add something. I am also using the "line/phone" output no preamp on thinking it would not mess with the sound. Almost like the difference between a digital amp vs tube amp: ???????