Galaxy Audio GT-INST-3 Trek Wireless Horn Microphone System

Add a wireless mic to your horn without a cumbersome, complicated system. The Galaxy Audio GT-INST-3 Trek is easy to set up, with a long-lasting battery.

The Galaxy Audio GT-INST-3 portable, wireless horn mic is a lightweight, high fidelity, flexible gooseneck condenser microphone, making it an excellent choice for most horn instruments. The horn mic captures high quality sound, while its lightweight design offers mobility without adding additional weight to the instrument. The soft rubber clip offers secure and easy attachment while preventing damage to the instrument finish.

The Galaxy Trek wireless transmitter, transmits seamlessly to the included wireless receiver, which will plug directly into most powered speaker inputs (1/8" & 1/4"). This conveniently adds a wireless microphone to most powered speakers.

The Galaxy Trek is powered by long-lasting internal lithium batteries located in both the transmitter and receiver. Charging is quick and easy with the included micro USB cable. The system also includes two adapter cables for both Android and Apple iOS smart devices.
The new Galaxy Trek delivers quality wireless audio to numerous "on the go" applications.


- 2.4GHz Wireless Transmission
- Compact Light-Weight Design
- Easy Set Up
- Frequency Response: 40Hz 16kHz
- Uni-Directional Condenser Gooseneck Microphone
- For Use With Most Horn Instruments: Saxophone, Trumpet, Tuba, Trombone, French Horn
- 50 ft Operating Range
- 6 Hours Battery Life

Frequency Range: 2.4GHz Frequency Hopping
Frequency Response: 20Hz - 20 KHz
Pairing: Auto-Match

Included Accessories:
- Detachable Belt Clip
- Cell Phone Adapter Cables (Black-iPhone and Red-Android)
- 1/8" to 1/4" Adapter
- USB Charging Cable
- 19.7" Female to Male Extension Cable
- Windscreen
- Rubber Shock Bracket

Horn Microphone
- Mic Diameter: 0.24" x 0.55" (6.5 x 14 mm) (LxDia.)
- Polar Pattern: Uni-Directional
- Sensitivity: -47dB ±2dB
- Frequency Response: 40Hz - 16kHz
- Standard Operating Voltage: 2.0V - 10V.DC
- Signal to Noise Ratio: >63dB
- Impedance: =680O

Gt-Inst Transmitter
- Controls: On/Off Power Switch, Volume Control
- Battery: Lithium-Ion Rechargeable
- Input: Mini USB for Charging
- Indicators: Power and Pairing

Gt-R Receiver
- Controls: On/Off Power Switch
- Battery: Lithium-Ion Rechargeable
- Input: Mini USB for Charging
- Output: 1/4" or 3.5mm Stereo Output Plug
- Indicators: Power and Pairing
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 0.75 lbs
Shipping Dimensions: 9 x 7 x 2 in
Manufacturer Part Number (MPN): GT-INST-3X
Shipping Weight: 1 lbs
Shipping Dimensions: 9 x 7 x 4 in
Manufacturer Part Number (MPN): GT-INST-3X

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


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