The Xvive AT-1 portable audio tester is a versatile tool designed for musicians and audio technicians to test and troubleshoot various audio equipment. You can emit a precise 1kHz tone or pink noise signal through XLR, 1/4" and 1/8" connectors at -10dB, -20dB or -40dB output levels. The XLR cable tester allows you to detect if all three pins are functioning correctly, while the input metering gauges the strength of XLR input signals. The phantom power check tests the voltage output to ensure proper operation. When connected to an audio source, you can conveniently monitor the input through headphones or speakers using the 1/8" jack. With its compact size and included protective case with belt clip, the AT-1 is a highly portable solution for testing powered speakers, effect pedals, cables, IEM systems, mixers and more on the go.