EMG 81-7 7-String Humbucking Active Guitar Pickup, Black by EMG. $109.00. The EMG 81-7 is a high output pickup designed especially for the 7-string lead guitarist. The 81 is at its best for high volume overdrive and amps with a master volume. Whether you're playing power rock and roll, or overdriving your amp, there's a razor sharp attack, and incredible sustain for brilliant soloing. If you're looking for exceptional qualities in a 7-string rock pickup, the EMG 81-7 is the one.