Seymour Duncan Guitar Pickups, Bass Pickups, Pedals Hand-crafted electric guitar pickups, acoustic guitar pickups, bass pickups and pedals. Helping musicians find their signature sound since 1976. Seymour Duncan Quarter Pound™ Tele | Seymour Duncan DCR – Short for DC Resistance, is measured in Ohms and is the total resistance of the copper wire wound around a coil form. The length of the coil form, the number of turns and the gauge of wire all affect the DCR reading. DCR is often used as a gauge of output because as the turns increase, so does the output, though magnet type and the coil geometry also influence output.