This HDPE foam soundhole cover fits the current version of the OF660 soundhole and is useful for dealing with feedback in certain amplification settings. The lower part of the cover insert is recessed to accommodate the soundhole controls on our EPS001-15K dual source pickup system as well. Note: This soundhole cover does not fit the sound holes of the first generation OF660, which was located closer toward the waist of the guitar. If your OF660 soundhole looks like the one in the picture here, this is the one you want.
