I use on in my Martin D-16 and Taylor GS. Good sound and the active (powered) one has a convenient volume control. Only problem is that it won't fit in guitars with smaller sound holes. Martins and Taylors are fine but I had problems with Blueridge and Guild guitars. You can disconnect (unplug) the cable from the endpin jack from the pickup so you could use the pickup in any guitar with an endpin jack and cable with an 1/8 inch, right-angle, stereo tip. The pole pieces are adjustable to balance the output from string to string to get the best sound. I guess you could say I like it.