Detail 01
Split-unit design
Place the AT-3M and AT-3F at opposite ends of a cable run for remote testing and monitoring.

Independent shopping perspective
A split-unit audio tester for remote troubleshooting of long XLR, DMX, and installed signal paths.


Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.

Detail 01
Place the AT-3M and AT-3F at opposite ends of a cable run for remote testing and monitoring.
Detail 02
Auto mode or individual pin 1, 2, and 3 checks are available for XLR cable testing.
Detail 03
The AT-3M checks phantom power on XLR pins 2 and 3.
Detail 04
The AT-3F provides SG and PK indicators for signal presence and peak status.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. Its AT-3M and AT-3F units can be placed at opposite ends for long-distance XLR and DMX cable checks.
It generates a 1 kHz sine wave or pink noise at selectable -10, -20, or -40 dBu output levels.
The AT-3F routes XLR or 1/4 in TS input to its built-in speaker or 1/8 in headphone output.
Both units charge via USB-C using a 5 V/2 A USB power supply, with a stated full-charge time of about 1.5 hours.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.