Sennheiser EW 300 G4-CI1 Wireless Guitar

The EW 300 G4-CI1 is Sennheiser's mid-tier answer to the wireless instrument question — a UHF true diversity receiver built around the G4 platform that has earned a reputation for dependable, consistent performance across thousands of touring and theater rigs. It pairs with a beltpack transmitter and the CI1 straight instrument cable, letting a guitarist or bassist cut the cord without fussing with a clip or capsule. The half-rack form factor is the key detail for rack builders: this receiver occupies half a 1U slot, which means you can pair it with another half-rack unit and lose only a single rack space total.

True diversity means two antennas and two receiver paths, with the unit selecting the stronger signal in real time — that matters on a busy stage where a guitar player is moving around and bodies are absorbing RF. The BNC antenna inputs let you run remote antennas via coax if the rack is positioned offstage or in a pit where line-of-sight is poor. Both a balanced XLR output and an unbalanced quarter-inch output are on the rear, so you can feed a console's line input directly or route into an amp's effects return depending on how the show is wired. At 6–8 watts, it's a light power draw and won't stress a conditioner even in a densely loaded rack.

This system earns its place when you need something proven and low-maintenance — a working guitarist or bassist who wants to set scan-and-sync at soundcheck and not think about it again. If you're running multiple wireless channels in a single rack, the half-rack format stacks efficiently, but you'll need a proper half-rack shelf or a pairing unit to fill the space cleanly. Players who need extended range in challenging RF environments or who are touring arenas might look at the EW 500 G4 or Digital 6000 series for more headroom. For club, theater, and festival work at this price point, the G4 CI1 is a hard system to argue against.