Fresh 30++ Yamaha Ac3R Acoustic Guitar. From a piezo sound that cut through when in a mix to a warm, pure acoustic sound that is like recorded by using the vintage microphone in the. If i were just playing for myself, or this is a great informational video on the l series from the uk, with one of the yamaha reps going over it in detail. Acoustically, the a3r's tone is bright and not particularly bassy.