Martin OMCPA4 Rosewood Spruce Top - Natural NP730 Its new Voicing control lets

Its new Voicing control lets any guitar simulate the tonality of parlor

The AC30 models feature a GZ34 rectifier tube

and high-grade stitching with bead on the seam

In the 1960s a new guitar effect was introduced that would leave its mark on some of the most influential music ever made

Martin OMCPA4 Rosewood Spruce Top - Natural NP730 Its new Voicing control letsThe OMCPA4 features a 14 fret cutaway with a fast and comfortable Performing Artist profile neck and Fishman's F1 Analog onboard electronics. With more tonal color and variety, this model is perfect for any performing artist. Shop All Martin Guitars Shop All Russo Music New Arrivals Specs Body Top: Sitka Spruce Body Back Sides East Indian Rosewood Neck Material: Select Hardwood Fingerboard Material: FSC Certified Richlite Body Shape: 000 14 Fret