Hi Everyone, I just finished modding this amp with a custom 4 stage non-cf high gain mod. It's based on the gain channel of my 2 channel prototype, but I've tweaked it for a long time. It also has a tube fx loop. There's a bass shift switch on the bass pot, a mid voicing switch on the gain pot, and a gain structure switch, that takes away some saturation. It can do crunchy 70s, 80s Hard Rock/Metal, and more modern Metal sounds. Let me know what you think!