I guess this is in the right forum. I have a problem with my setup at the moment. I use an Ashton 40watt amp and I've just had my bass rewired (to replace a pot). The problem is that the E string isn't as loud or bright as the other strings. Also when I fret up past the 12th fret the sound is so much brighter and louder compared to lower frets (on all strings). Is this a problem with my amp, do I just need to adjust the treble, mid and bass right or is it something thats inherent in the making and quality of the amp? Could also be my bass?