Designed for acoustic guitars, the 3AV magnetic pickup mounts in the soundhole. It has a bright, clear hum-canceller (stacked coil) with B-string compensation.
It includes the plastic mounting brackets and a 10 foot cable with strain relief. The brackets make it easy to install the pickup to your guitar for gigs at the coffee shop or stage and then remove when playing solo.
The adjustable brackets fit most soundholes from 3 7/8 inches diameter and larger.
The B-string is typically thicker than the high E-string and the solid cores of the wound strings. For that reason, the pickup compensates the B-string to ensure even output of all 6 strings.