EM ELECTRONIC MUSICIAN MAGAZINE SEPTEMBER 1992 GROUNDING PRINCIPLES FOR NO HUM/PAD & DRUM CONTROLLERS/RECORDING GUITAR/ENSONIQ DP4, MUCH MORE. Please see all photos for physical condition and ask any questions. Listing includes everything pictured and only what is pictured. Unless specified above, listing includes bare magazine issue only, and does not include subscription cards, audio recording discs, tapes, or records, pullout advertising, or removable sections. Thanks for looking!