The BOSS GT-8 is a powerful guitar effects processor that features dual COSM modeling engines, providing exceptional performance and tonal flexibility ideal for both live and studio use. This processor allows guitarists to layer and manipulate two discrete amp channels independently, enabling the creation of a wide range of expressive sounds. Key features include the Solo Switch function for instant lead tone activation and a vast selection of 44 effects categories, with up to 13 effects blocks that can be used simultaneously. The GT-8 also offers built-in synth waves and an extensive library of preset and user patches for custom sound creation. Despite being discontinued, the GT-8 remains a sought-after tool among guitarists thanks to its impressive sound quality and versatile routing capabilities.