Here's another GGA pedal inspired by a Steel String Singer Dumble amp and orig made supposedly by the Vertex character (but this concept is not new to the effects world). I was less than impressed with a number of issues trying out an original circuit and made so many changes that I basically re-designed the entire thing. Especially the Filter (mid range tone control). This one does indeed change the mid character in a much better range while adding more low mids a slightly shaving highs turned to the left and the opposite with upper mids and highs while reducing and tightening lows turned towards the right. Hours spent with numerous trial tests getting it just in the right ranges. It uses four jfets in a stacked in pairs in the high gain style SRPP/coscode aka mu-amp configuration and depending on the jfets used provides quicker onset of distortion and depending on if using single coils or humbuckers. Jfets are renowned to have the most "tube-like" rounded corners' distortion like our tubes. It's very soft, musical, and creamy never harsh. Precautions were taken to power them in a way to minimize floor noise, and there's quite an amount of volume on tap to push that first V1 tube gain stage into form and character. It's very transparent and does kick up and tighten the SRV low E snap that he's so famous for. Kicking it on and off you can really tell the difference. The touch sensitivity is terrific where you get all of the juicy harmonic content working the guitar's Volume knob or by how hard your pick attack is. :) It can be used for the usual lead/solo Boosting duty but was designed to be left "on". You really miss it when it's off.
keo