For acoustic guitars only. Padded guard clips against damage to your guitar.

The pick-up produces a clean sound quality and has low feedback. easy to use. 

Hook it through the sound hole and plug it into you amp. Only for steel acoustic guitar strings

Achieve the ultimate in wireless freedom with Sennheiser's ew 172 G4. Using a combination of a compact bodypack transmitter and a reliable rackmountable receiver, the ew 172 G4 system it easy to "plug in" without the hassle of onstage cable tangles. And it sounds great — you get 1,680 tunable UHF frequencies across a 42MHz bandwidth for interference-free reception. Beyond that, the ew 172 G4 is backwards-compatible with previous evolution systems, ensuring that your past investment continues to pay off into the future.