The Martin Grand J-28LSE Baritone Acoustic-Electric Guitar with its "Grand Jumbo Baritone" tone, playability and power is designed for lower tuning but can also be played in standard tunings.

As one of the largest Martins ever, it has a scale length of 27.5", 17" wide lower bout, long neck (21 total frets with 15 clear) and deep body. It boasts a back and sides crafted of East Indian rosewood joined with a scallop-braced Sitka top. A mahogany neck features the classic diamond volute and square tapered headstock, with a fingerboard and bridge crafted of African black ebony.

D-TAR wave-length multi-source pickup system
Pioneer and longtime leader in acoustic guitar building, C.F. Martin has selected the D-TAR Wave-Length™ Multi-Source™ combination pickup and microphone system to include in their top-of-the-line acoustic-electric models. These finely crafted instruments truly show off the features and outstanding tonal qualities that D-TAR delivers, as well as the best characteristics that Martin guitars offer.

The D-TAR Multi-Source combines the Wave-Length piezoelectric under-saddle pickup with a miniature condenser microphone that is nestled in a special absorptive visco-elastic polymer shock mount for optimal isolation. With separate signal sources coming from two different tonal points inside the guitar, and two low-profile knobs for master volume and microphone volume to control the blend of the piezoelectric pickup and microphone, the player has more flexibility to bring out the most natural sound possible from an acoustic guitar when amplifying it. Additionally, output can be wired in mono or stereo to further expand on the tonal possibilities when using two signals. The Wave-Length piezoelectric pickup is powered by an 18-volt preamp that operates via two AA batteries. Compared to a more common 9-volt system, 18 volts allows far more headroom, resulting in increased clarity and less distortion when the strings are hit hard.