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Galaxy Audio AS-900 IEM Wireless Personal Monitor System (N1 Band, 514.4 MHz)

The AS-900 is a great entry-level Wireless Personal Monitor. This system features an 80mW receiver output. The receiver also contains an RF and low battery indicator. The transmitter has L/R level display, stereo XLR/1/4" inputs and an headphone output with volume control. The AS-900 is a fixed frequency unit. 

  • UHF Fixed Frequency
  • Stereo or Mono Transmission
  • Multiple Receivers can be used with 1 Transmitter 
  • Single/Dual Rack Mount Included
  • 200' Range
  • EB4 Ear Buds Included

An unlimited number of receivers may be added at any time.

AS-900T Transmitter

  • AF L/R Indicator
  • Transmits in Stereo or Mono
  • Fixed Frequency
  • XLR/1/4" Combo Input
  • RF Output 10 mW

AS-900R Receiver

  • Earphone Out Volume Control
  • 80 mW
  • RF Indicator
  • Low Battery Indicator
  • 3.2 oz (90 g)


Band UHF
Frequencies Available Code K1 630.2 MHz 
Code K2 633.4 MHz 
Code K3 634.8 MHz 
Code K5 646.7 MHz 
Code K7 650.2 MHz 
Code K8 659.0 MHz 

Code N1 514.4 MHz 
Code N2 517.55 MHz 
Code N4 521.85 MHz 
Code N6 527.55 MHz 
Code N8 531.15 MHz 
Code N9 538.8 MHz
Transmitter Output Level 10 mW
Operating Range Under Typical Conditions 200' (61m)
Note: Actual range depends on RF signal absorption, reflection, interference, and battery characteristics
Audio Frequency Response +/-3dB 80Hz - 16kHz
Total Harmonic Distortion <1% @ 1kHz
Signal to Noise >80dBA 
Maximum Deviation Range +/-40kHz 
Dynamic Range >90dB A-weighted
Operating Temperature Range 14º F to 122º F (-10º C to 50º C)
Note: battery characteristics may limit this range
Main Frame Size EIA STANDARD 1/2 U 
Modulation Mode FM Stereo Modulation
RF Output 10 mW
Max Audio Input Level +6dBV
Gain Adjustment Range 40dB
Audio Input Line Level X 2, XLR / 1/4" Combo Jack
XLR Input Impedance balanced
Pin 1: Ground (cable shield) 
Pin 2: Audio +
Pin 3: No Audio -
Dimensions 1.5" x 8.3" x 3.8"
(38 x 212 x 96 mm) (HxWxD)
Weight 21.3 oz (605 g)
Power Requirements 12-18 V DC at 1000 mA, supplied by external power supply
Audio Output Level 80mW Earphone Out with Volume Control
Sensitivity -94dBm for 30dB
Stereo Separation 40dB (at 1kHz)
Output Connector 1/8" (3.5 mm) Stereo Earphone Connector
Dimensions 3.74" x 2.6" x 1" (95 x 65 x 25 mm)(HxWxD)
Weight 3.2oz (90 g) without batteries
Power Requirements 2 "AA" size alkaline or rechargeable batteries
Battery Life About 5 hours (alkaline)