I've never understood why they put low pass filters on a guitar. My amplifiers have all had tone controls. In the early 70's, for more tone control, I built a preamp with graphic equalizer. The tone control on my guitars just seemed like a nuisance. Do the tone controls on your guitar do anything useful that you cannot already do with your amplifier's tone controls? Do any of you change the tone control setting on your guitar in the middle of a song? Do any of you change the tone control setting on your guitar from song to song?