AKG WMS40 PRO Single Series Wireless systems provide fantastic sound quality, reliable wireless performance,.
Their intelligent design includes ergonomic receivers and transmitters,and environmentally-friendly transmitters with amazing 30-hour battery life on a single AA battery. WMS40 PRO Single systems operate on fixed frequencies and feature rugged, all-metal case construction on the chassis, and more. 

The AKG CK 55 clip-on microphone for applications including houses of worship, lecturers, etc. Connects to AKG bodypack transmitters. 
The CK 55 provides a natural sound, with a slight rise above 10 kHz for added clarity. Its cardioid polar pattern and bass rolloff combine to suppress unwanted ambient noise.

Channel Frequencies
Channel 54: 710.400 MHz
Channel 54B: 711.000 MHz
Channel 58: 734.600 MHz
Channel 58B: 736.975 MHz
Channel 60A: 748.875 MHz
Channel 60B: 750.900 MHz
Channel KR4: 751.550 Mhz


  • SR 40 Single Receiver
  • Carrier frequency range: 710 to 865 MHz, 1 fixed frequency
  • Modulation: FM
  • Audio Bandwidth: 40 Hz to 20 kHz
  • THD (typical) 0.8 % (at 1 kHz)
  • Signal to Noise Ratio (typical): 110 dB(A)
  • Power Supply: 120/230 V AC
  • Audio Outputs: Balanced 1/4-inch jack, output level adjustable, at rated deviation: 500 mV rms.
  • Dimensions: 7.8 x 7.4 x 1.7 inches
  • Net Weight: 1.3 lbs.