ASHTON D20S NTM SOLID TOP The Ashton D20S acoustic guitar will be your constant companion as it is extremely portable and great for gigging or songwriting. The Ashton D20 Series has a Solid Spruce top, Basswood sides and back with Smartwood Fingerboard and Bridge. Packed full of great sounding features, The D20S is one of thes best value Solid Top acoustics around.