In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The AD20/SR PLUS is a solid sitka spruce top and solid Rosewood back dreadnought. It is a complete package with an attractive aesthetic of broad appeal. It is a bold acoustic dreadnought ready to wow your studio engineer and to be heard in the jam session. Of the Breedlove Atlas Series Dreadnought Guitars this is to be the finest in quality and workmanship, with tasteful aesthetic enhancements.