Add fullness with colored EQ

Marc Daniel Nelson utilizes a unique, hidden characteristic of the Helios Type 69 EQ to add fullness to the main guitar. The trick involves setting the low-frequency band to 60Hz, but without adding any boost to the band's gain control. This way the EQ circuit subtly shapes and colors the sound, enhancing its richness and thickness without introducing muddiness. The original inspiration for this technique came from Andrew Sheps.