Right alongside a flashlight and duct tape, no serious audio engineer should go anywhere without the Phonic PAA3 in their back pocket. This handheld audio analyzer is resoundingly accurate and features an array of different tools, including a 31-band real-time spectrum analyzer, reverb time analyzer, sound pressure and line level meter, internal signal generator, EQ setting calculations, microphone calibration, and speaker phase checking abilities. All functions and menus are controlled through central jog dials, so your other hand is free to adjust audio settings. A built-in USB interface allows for easy data upload and download, as well as the option of real-time PC operation. A large LCD backlit display provides visibility in any environment, and 4 AA batteries provide 7 hours worth of power – assuring the PAA3 is always ready when you need it.