Distorted audio on synced iPhone for specific CDs from iTunes library

why do one or two out of hundreds of cds downloaded on macbook air sound distorted on synced iphone. All other music perfect quality when synced. This is a new issue after storing music for in iTunes library It’s odd that only one or two cds have begun to sound distorted on synced iPhone. They’ve been stored in iTunes library for several years.


[Edited by Moderator]

iPhone 13, iOS 18

Posted on Sep 9, 2025 2:58 PM

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Question marked as Top-ranking reply

Posted on Sep 10, 2025 6:42 AM

The first thing to check is whether the same songs sound distorted when played by your iTunes Library (on your Mac). If the songs sound distorted in your iTunes Library, the only suggestion I have is to rip new copies from the CDs.


However, if they sound okay in iTunes, but distorted on your phone, check to see whether you have the phone's EQ set to on. If it is on, turn it off and check the same songs on the phone once again. If they sound okay once the EQ is off, that suggests that the EQ may be too much. In other words, if the song is a bass heavy song and you add more bass, that will simply be too much and lead to distortion. It might even be that the headphones that you're using may not be able to cope with the added bass.


I have discovered that one tune in my collection suffers from distorted sound when played through a pair of clip-over-the-ear buds that I was trying. At a push, I can hear slight distortion with other speakers, but these ear buds make it very obvious.


Don't forget though, it may not only be bass, other less bass heavy sounds can cause issues under certain conditions.


If the songs sound okay in your iTunes Library, and the EQ and headphones do not appear to be the issue, try removing the relevant tracks from the phone and then adding them back again. (In other words, if by any chance there is now an issue with the files on the phone, perhaps replacing them with new "copies" from your computer might solve the problem.)



1 reply
Question marked as Top-ranking reply

Sep 10, 2025 6:42 AM in response to valeriesampson

The first thing to check is whether the same songs sound distorted when played by your iTunes Library (on your Mac). If the songs sound distorted in your iTunes Library, the only suggestion I have is to rip new copies from the CDs.


However, if they sound okay in iTunes, but distorted on your phone, check to see whether you have the phone's EQ set to on. If it is on, turn it off and check the same songs on the phone once again. If they sound okay once the EQ is off, that suggests that the EQ may be too much. In other words, if the song is a bass heavy song and you add more bass, that will simply be too much and lead to distortion. It might even be that the headphones that you're using may not be able to cope with the added bass.


I have discovered that one tune in my collection suffers from distorted sound when played through a pair of clip-over-the-ear buds that I was trying. At a push, I can hear slight distortion with other speakers, but these ear buds make it very obvious.


Don't forget though, it may not only be bass, other less bass heavy sounds can cause issues under certain conditions.


If the songs sound okay in your iTunes Library, and the EQ and headphones do not appear to be the issue, try removing the relevant tracks from the phone and then adding them back again. (In other words, if by any chance there is now an issue with the files on the phone, perhaps replacing them with new "copies" from your computer might solve the problem.)



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Distorted audio on synced iPhone for specific CDs from iTunes library

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