I have a Zoom R8 Digital Multi-Track Recorder. I was trying to record playing an old Alvarez Regent acoustic guitar with a Lawrence pick-up clipped in the sound hole. The problem is a buzz I get in the final product that sounds like a speaker buzzing when turned up too loud. I have turned down everything that has anything to do with the input signal but still get the buzzing sound. It isn't separate from the guitar sounds so I can't just cut it out with Audacity. That old Alvarez has a very warm tone but the buzz messes everything up and gets even worse when trying to add effects (e.g. chorus, reverb, etc.). I used it to record on a Boss BR864 and the sound quality was excellent. Then, the BR864 stopped working. Sent in for repairs and they said it needed a new board (which is no longer manufactured)...so I'm stuck with the Zoom. Would plugging the guitar into a direct box and then into the recorder help? So forums say to definitely use the direct box while others say do NOT do it...I'm at a loss here. Most of what I've seen shows one or more microphones.