Item #1475656 Model #4W-1KU-HM45U-BL-NEUS

Nady 4W-1KU - Quad 1000-Channel Headset Wireless System Standard


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Four-channel wireless system with stage-friendly microphone headsets.

Perfect for events or performances, Nady’s flagship wireless system, the W-1KU, combines many features that set this system apart in the wireless industry. This is a four-channel headset version of the system, which is additionally available in single, dual and eight-channel versions. This one contains four of the HM-45U headsets.

This package comes with the 4W-1KU dual receiver, four BT-1KU LT wireless bodypack transmitters, four HM-45U headworn microphones, an AC adaptor, two removable BNC antennas, two extender cables for front mounting the antennas, a user guide and a frequency chart. The BT-1KU bodypack transmitter features a roadworthy all-metal case, power Off/Mute/On switch, flexible external antenna rod and mini locking connector for the HM-10.

The HM-45U is a head-worn unidirectional condenser microphone that is mounted on a single earpiece, designed to be mostly invisible on the stage. It is ideal for musical theater and other applications where a headset microphone's visibility might distract from the performance or presentation. It is a wide-bandwidth electret condenser mic that ensures clean, transparent audio and enhanced vocal pickup with improved gain before feedback. It features an ergonomic single-ear design and comfortable fit with or without glasses, hats, or headphones. It is extremely lightweight and provides hours of comfortable use. The H-45U comes with three sizes of foam windscreens that reduce wind and popping noise. Its extendable boom is fully adjustable for optimal mic capsule placement, and is available in black or beige.

Receiver features include Nady's Automatic Scanning technology, which quickly scans 1,000 UHF channels, so finding interference-free frequencies takes only seconds so transmitter synchronization happens right away. Its True Diversity dual antenna design maximizes range and eliminates dropouts. An all-metal housing is included for all receivers and transmitters, so your wireless equipment can withstand the rigors of live performances and professional transport. Backlit LCD displays are included on the W-1KU receiver to indicate selected audio output volume level, group/channel, RF signal strength meter, and A/B diversity status. All transmitters also have an LCD display indicating selected group, channel, volume (input audio level), and battery level status.

  • Analog or digital: Analog
  • Frequency response: 30z to 18KhZ
  • Max SPL: 120 dB
  • Line of sight: 500'
  • Obstructions: 100'
  • # of transmitters 4
  • Capsule: Dynamic
  • Polar pattern: Hypercardioid
  • Microphone type: Headset
  • Switches: On/Off
  • Type: AA x 2
  • Life: 10 hours
  • Number of channels: 1000
  • Bandwidth: 32MHz
  • Frequency band: Analog (UHF)
  • Construction: Metal
  • Width: 2.5"
  • Height: 3.25"
  • Weight: 3.8 oz.
  • Receiver construction: Metal
  • Width: 17"
  • Height: 2"
  • Depth: 7.5"
  • Weight: 6.3 lbs.
  • Rackmountable: Yes


  • Four independent wireless receivers in one enclosure for simultaneous operation of four transmitters
  • Four HM-45U headset mic included 
  • Unsurpassed performance with 120dB dynamic range
  • True Diversity circuitry for worry-free operation and dropout protection. Up to 500’ range
  • Rack-mountable receiver with 4 balanced XLR mic level and 1 unbalanced ¼” mixed line level audio outputs
  • Backlit LCD with user-friendly configuration menus indicating frequency, volume, and RF signal strength
  • 1000 selectable UHF frequencies per transmitter for interference-free reception with AUTOSCAN feature 
  • All-metal bodypacks