Gold Tone OM-800/PLUS Octave Mandolin w/CaseOctave Mandolins are tuned one octave lower than the standard mandolin. They've become increasingly popular with mandolinists that want to expand their range of expression on an instrument that they can be instantly comfortable with. The OM 800+ features a generous 22 1 2" scale (commonly used by the best custom makers in Ireland). It comes with a passive bridge mounted pickup for easy amplification and the slim neck has a comfortable compound