In the Yamaha AC3M Concert acoustic-electric guitar, Yamaha offers a vintage look with enhanced volume in the low-mid ranges, due to new scalloped bracing for the top and shorter bracing on the guitar's back. With a solid Sitka spruce top and solid mahogany back and sides, this concert-sized guitar sounds fantastic. It also benefits from Yamaha's A.R.E. wood torrefaction, a high-heat treatment that gives the guitar top greater stability and an aged, vintage hue. The Yamaha AC3M Concert takes full advantage of Yamaha's unobtrusive and versatile SRT2 pickup system for recording and stage performance. You get volume, treble, and bass controls (with auto feedback reduction), and blend control allows you to balance between the piezo and SRT2 preamp, for your own distinctive tone.