AT-3 Audio Tester Ultra

• Split-unit audio testing tool with independent male and female XLR units
• Remote signal testing and XLR Cable Testing with one unit on each end
• Signal Generator emits 1 kHz tones or pink noise audio signals
• XLR Input Metering to measure the strength of XLR input signals
• Phantom Power Check to test voltage and ensure normal operation
• Headphone and Speaker Monitoring to check input signals
• Suitable for testing powered PA speakers, effect pedals, cables, DI boxes, IEM systems, mixers, and other audio equipment
• Units charge via USB in 1.5 hrs and a full charge lasts up to 4 hours

This split-unit tool offers maximum flexibility for all your audio testing!

Signal Generator

Outputs a 1 kHz sine wave or pink noise audio signal through XLR male, 1/4″, and 1/8″ connectors, with three output level options: -10 dB, -20 dB, and -40 dB.

XLR Input Metering

Measures the input volume level of the XLR female connector.

Phantom Power Check

Tests the output voltage of the phantom power and ensures both pins are functioning properly.

Headphone and Speaker Monitoring

When an audio source is connected to the XLR female / 1/4″ input, you can monitor the signal with headphones or speakers via the 1/8″ headphone jack.

HOLSTER POUCH

Also included are a 1/4″ male to 1/4″ male adapter, and a USB-C charging cable

Specifications

	XLR Balanced Jack	1/4" Unbalanced Jack
1 kHz Tone Generator (±1 dB)	-40, -20, -10 dBu	-40, -20, -10 dBu
Pink Noise Generator (±1 dB)	-40, -20, -10 dBu	-40, -20, -10 dBu
Input Meter 'SG' Threshold	-20 dBu	n/a
Input Meter 'PK' Threshold	+10 dBu	n/a
Output Impedance	350 Ω	600 Ω
Input Impedance	3 kΩ	600 Ω / 3.5 kΩ
Phantom Power Voltage	solid: 44 - 52 V; flashing: 24 - 44 V	n/a
Cable Tester DC Voltage	3.3 V	n/a