The volume of the audio you recorded from an external device is low or you hear squeaking noises when you listen to the audio via the built-in speaker.
If you record audio from a monaural external device that is connected to your linear PCM recorder with a stereo connection cable, playing the recorded files may sound low in volume or make squeaking noises when you listen to the audio via the built-in speaker. This is because the left and right audio signal output is reversed in phase, and does not indicate a malfunction.
Be sure to use an audio cable with a monaural plug to record audio from a monaural external device.
The contents of the Help Guide may be subject to change without notice due to updates to the product's specifications.