Check the listing for details. Xvive AT-3 Audio Tester Ultra. Condition: New. Listed at 249.99 USD. A Split-design Audio Tester with Crucial Detection Features Suitable for a wide variety of audio testing applications, the Xvive AT-3 packs crucial detection features into a conveniently compact utility tool. To start, the Signal Generator can emit either a 1kHz sine wave or pink noise for testing the inputs of your audio gear. The XLR Cable Tester determines whether or not your cables are functioning properly, while XLR Input Metering measures the strength of XLR input signals. Next, the Phantom Power Check tests voltage, which is individually metered on pins two and three of an XLR output jack. Lastly, you can use the Headphone/Speaker Monitoring function to listen to input signals. The AT-3 features a rechargeable internal battery for maximum portability.