Description Product Description The Gibson Acoustic Advanced Jumbo Red Spruce Special is a high-performance guitar hand built with superior performance in mind. The AJ is one of Gibson's most powerful acoustics and this model is no different. The Bihlwara back and sides from northern India render unrivaled, rich overtones on top of the already power- house sound of the AJ. This rare tonewood combination is matched with a select Adirondack red spruce top that is hand finished with Gibson's own custom color burst! This limited edition features the added versatility of a built-in L.R. Baggs Element VTC pickup with sound hole-mounted volume and tone control.