Galaxy Audio DHXR/77HS Headset Microphone Wireless System

Get a headset microphone, body pack transmitter, receiver, and rack mount kit all together with the easy-setup Galaxy Audio DHXR/77HS wireless system.

Galaxy Audio's DHX professional wireless system packs the tools for the pro. The DHXR (DHX Receiver) features Auto Scan that will search for an available frequency to use, as well as IR Sync for easy connectivity from receiver to transmitter. The large LCD display shows channel number, frequency, lock mode, and volume output. The DHX professional wireless system receiver has an easy to read RF and AF indicator. The UHF diversity antennas ensure quality operation. The receiver has also been upgraded to include Tone-key squelch for improved rejection of outside interference. Single/dual rack mount kit included.

This system includes the DHXR Receiver, MBP77 Body Pack Transmitter, the HS-U3BK Headset Microphone, Antennas, 1/4" to 1/4" cable, Power Supply, Rack Ears, and Screws.


- 300' Range
- Auto Scan
- 120 Selectable UHF Frequencies
- Diversity Antennas
- Single/Dual Rack Kit Included
- LCD Display
- IR Sync Receiver to Transmitter
- Frequency with Channel and Group Selector
- AF/RF Indicators
- Tone-key Squelch
- Squelch Adjustment
- XLR/1/4" Output
- Detachable BNC Antennas
- Metal Chassis
WARNING: Cancer and Reproductive Harm -

Available Frequencies: 120
Frequency Ranges:
CODE D 584 - 607 MHz
CODE N 518 - 542 MHz
Transmitter Output Level: 20 mW
Band: UHF
Operating Range Under Typical Conditions: 300' (92 m), actual range depends on RF signal absorption, reflection, and interference.
Audio Frequency Response: (+/-3 dB) 60 Hz - 16 kHz
Total Harmonic Distortion:(+/-30 kHz deviation, 1 kHz tone): <1%
Dynamic Range: >90 dB A-weighted
Operating Temperature Range: 14 degrees F to 122 degrees F battery characteristics may limit this range
Audio Output Level: (+/-30 kHz deviation, 1 kHz tone)
XLR Connector (into 600 Ohms load): -12 dBV
1/4" Connector (into 3 k Ohms load): -18 dBV
Output Connections:
1 Male XLR Balanced
1 1/4" Unbalanced
Output Impedance XLR connector: 200 Ohms
1/4" connector: 1 k Ohms
XLR Output: Impedance balanced
Pin 1: Ground (cable shield)
Pin 2: Audio +
Pin 3: No Audio -
Sensitivity: -93 dBm for 30 dB
Image Rejection: >90 dB
Casing: Metal Chassis EIA STANDARD 1/2 U
Dimensions: 1.7" x 8.3" x 6.3" (45 x 212 x 160 mm) (HxWxD)
Weight: 31.7 oz (900 g)
Power Requirements: 12-18 V DC at 500 mA, supplied by external power supply
Dimensions and Weight in Packaging
Band N 518-542 MHz
Shipping Weight: 5.25 lbs
Shipping Dimensions: 17 x 13 x 3 in
Manufacturer Part Number (MPN): DHXR/77HSN

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at

NOTE: None of the wireless systems we carry are capable of violating the FCC guidelines stated above. We are presenting this information as a matter of legally required disclosure.

For support or warranty questions, please contact the manufacturer:
Phone: 800-369-7768 x101

Band N 518-542 MHz

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