Back sides and top are all sinker mahogany! It's got that clear, articulate, woody mahogany tone. I've gigged a lot with it so it has a little play wear around the sound hole but nothing extreme. This is the guitar I chose to take to Sun Studio last year to record an album last year (see photos) so you know it's one of my favorites. I installed an LR Baggs undersaddle piezo pickup. I love this guitar but I just need to make some room.