Sennheiser AC 3

Active antenna combiner for Evolution in-ear monitors

Order Code: AC3
Our Price: $849.00

Tidy up your evolution series in-ear wireless rack with the addition of the handy AC3 antenna combiner. Combine all 4 transmitting antennas of your SR300IEM units - and also provide the units with power, all via the included 4 x BNC 50 ohm cables.

Try sticking an A2003-UHF antenna on the end of this to really improve your wireless setup.

*Active combiner requires NT3-1-EU power supply (not included)



Photo of Sennheiser AC 3 available from Factory Sound

In the box:

  • AC 3 antenna combiner
  • 4 x BNC cables
  • Operating instructions


  • Operates up to four wireless monitoring transmitters from the ew series using one shared antenna
  • Power is supplied to the SR 300 IEM G3 transmitters over the BNC cables, eliminating separate power supplies for the transmitters
Impedence 50 Ohm
Weight 700g
RF Frequency range 500 - 870 MHz
Operating voltage (stand alone) 13.8 V DC
Transmission loss 0 dB