The Godin ACS KOA Extreme blends classical guitar concepts with elements of solid body design. The incredibly comfortable neck of the Multiac ACS KOA Extreme , combined with a Silver Leaf Maple body with basswood wings & a cedar top with highly figured KOA leaftop, contribute to making this guitar a true gem. Although the body is chambered, the response from the top is more typical of a solid body design than a traditional acoustic guitar. This design results in an instrument that is virtually free of feedback, making it easy to use even when the band gets loud.

The engine in the ACS KOA Extreme includes individual transducer saddles powered by a customized preamp system by LR Baggs. This system not only produces superb amplified sound, but also produces a hexaphonic output through a 13-pin connector enabling direct access to Roland GR-Series guitar synthesizers.