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NADY SYSTEMS EO3 AA Pocket-Sized Wireless In-Ear Monitoring System

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Learn more about the Nady Systems EO3 AA




Pro Audio - Systems
EO3-T Transmitter: One 1/4" phone jack for Line Input; One 1/4" phone jack for Mic Input

EO3-R Receiver: 3.5 mm mini jack for earbuds output
Frequency Response: 100 Hz - 10KHz +/- 3 dB

Signal-to-Noise Ratio: 60 dB

Total Harmonic Distortion: < 0.5%

RF Carrier Frequencies: 72.1MHz

Frequency Stability: Better than 0.005%

Modulation: FM +/- 75 KHz
Power Requirement
EO3-T Transmitter: 9 V DC regulated, @ 200 mA, AC-EO3 adapter provided

EO3-R Receiver: 9V carbon zinc or alkaline battery


Any number of EO3 receivers can be used with a single EO3-T transmitter

Ultra compact and lightweight

Loudness adjustable with volume control - provides up to 130dB in-ear monitoring

Antenna is integral with earphone cord

A pair of mini binaural EB-3 earphones included; optional EMI soft rubber inserts supplied

LED Power On indicator

Single 9V alkaline battery operation

Dimension & Weight

EO3-T Transmitter (H x W x D): 1.25" x 8.25" x 4.25" (3.175cm x 20.9cm x 10.8cm)

EO3-R Receiver (H x W x D): 3.35" x 2.75" x 0.75" (8.5cm x 6.5cm x 2.25cm)
EO3-T Transmitter: 18.2 oz. (500 g)

EO3-R Receiver: 2.65 oz. (73 g) without battery

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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