code 50 saving presets crash and muddy sound



i bought a code 50 this past january, its still under warranty, and i've been having some problems with it. 

MODEL: code 50 75w


Model number: CODE 50

CMIIT ID:2016DJ2218


first problem, when i try to store any presets the amp crashes, completely loses sound and the buttons/pots stop working.

second problem, i cant seem to get a clean sound out if it, it always sounds quite muddy both trough the speaker and headfones. i've noticed that when i switch the amp on with headphones plugged in, for the first couple of secounds i get a nice clean bright sound, but then it gets muddy again.  this doesnt happen when i switch it on not using headphones, it goe straight to the muddy tone.

i've re-installed the latest firmware version but these problems persist ( MCU:1.44 BT:V3.1).


can you please advise how to fix these issues?


Best Regards,

Joao Brito


asked 28 Mar 2020 at 12:11 AM

joao brito
Answers: 1


Hi Joao,

Thank you for your message, we are sorry you seem to be having an issue with your Code amplifier, I would suggest contacting your dealer and they will be able to arrange for the amp to be looked at by an engineer.


Marshall Support

answered 30 Mar 2020 at 08:37 AM

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