This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.
MBQ PT-9A Audio Phase Tester is a small hand-held device and it has a built-in microphone that allows the user to quickly and easily check that the drivers or amplifiers in a sound system are operating with correct polarity. Great for car audio, home stereo, and pro audio.