PSB M4U User Manual (English)

Questions and Answers:

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Kristina ThompsonJul 26, 2025
What to do if my PSB M4U has no sound?
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  kevin92Jul 26, 2025
  If your PSB Headphone isn't producing any sound, there might be a few reasons. First, ensure that your source device is powered on and playing at a medium volume. Also, verify that the audio output on the source device is activated. If the problem persists, check the connection of the headphone cable to the source device; a faulty connection could be the culprit. Consider changing the cable if necessary.
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Amanda HudsonJul 31, 2025
How to increase the volume on my PSB M4U Headphone?
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  Lauren WilliamsonJul 31, 2025
  If you're experiencing low volume output with your PSB Headphone, start by checking that the cable is properly connected and fully inserted into the source device. Then, increase the volume to a medium level using the volume controls on the cable. Also, make sure to increase the volume on your source device as well.
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kaitlin41Aug 5, 2025
What to do if the sound is only in one earphone of my PSB M4U Headphone?
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  Emily ThomasAug 5, 2025
  If you're only getting sound in one earphone of your PSB Headphone, the cable might not be correctly connected. Try disconnecting and reconnecting the cable from both the earphone and your device, ensuring it's securely connected.
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Andrew BradshawAug 10, 2025
Why are the integrated controls not working on my PSB M4U?
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  Benjamin RobinsonAug 10, 2025
  If the integrated controls on your PSB Headphone aren't functioning properly, it could be due to a few reasons. First, your Apple device may not be compatible or could be faulty. Refer to the Apple compatibility guide on page 5. Also, the cable might not be correctly connected. Try disconnecting and reconnecting the earphone to ensure a secure connection. Additionally, removing any protective case from your source device can improve the connection.
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Wyatt TuckerAug 15, 2025
What to do if I hear audible distortion in my PSB M4U Headphone?
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  Elaine StanleyAug 15, 2025
  If you're experiencing audible distortion during playback with your PSB Headphone, the cable might not be correctly connected. Check the connection of the source device to the headphone cable and, if necessary, try using a different cable.
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Andrew DouglasAug 20, 2025
How to keep the eartip from falling out of my PSB Headphone?
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  Timothy RamirezAug 21, 2025
  If the eartip keeps falling out of your PSB Headphone, it might not be properly secured to the earphone. Fully remove the eartip, pull back and up on your ear to open the canal, and gently insert the entire earphone tip into your ear. Hold the tip in place until it feels comfortable.

PSB M4U Specifications

General

Type	Over-Ear
Impedance	32 Ohms
Sensitivity	102 dB
Driver Size	40 mm
Driver Type	Dynamic
Connector	3.5mm
Noise Cancelling	Yes
Connectivity	Wired
Frequency Response	20 Hz - 20 kHz