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I noticed my Marshall Code  25 makes a hissing noise when I play through any of the clean amp models. This hissing noise is clearly audible when I play a note on the low E string. It reminds me of an old cassette tape. This is especially apparent with the cab emulation switched off. On the higher strings there is no problem. Is this normal? The hiss doesn't go away with the noise gate turned on.  I have this problem with both firmware versions 1.44 and 1.45. 

asked 22 Feb 2021 at 03:09 PM

Stefan Kolev
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Just bought a SV212H with matching SV212 cab.

Even when the high treble volume is just above    Zero, there is a very noticeable hiss that is almost as loud as the guitar sound when playing clean.     When playing at home volumes and you let a chord ring, you can hear the hiss, surely this can’t be normal? The more you turn it up, the louder the hiss gets.

The normal channel 2 doesn’t have this hiss at all, even when really turned up. 

Is there a fault with the amp, or is this normal? 

It just really spoils playing moderate/low  volumes with  clean sound, I’ve never known a Marshall do this before. 

The official demo’s of the amp by Marshall don’t have the hiss when they pause playing or let a note decay. 

Help!

 

asked 07 Oct 2020 at 11:32 AM

Andy Traverse
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EDIT: found out that when I put my amp in bluetooth pairing mode it stops. Sound also comes out the speaker itself. So it's something internal for sure

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I have a CODE 100C and when I connect it to my interface with the HP out (or even the fx send -- or even when using the HP out as a HP out) I have this high end hiss/artifact.

Here is a recording of the sound: https://youtu.be/a9mjRFiqVX0
obviously it's not as loud as in the video.. but it's still there

Recording with the HP out is the best way for me to elimante latency, but the sound quality is just bad. Also with USB I can't get acceptable latency..

edited 15 Jul 2020 at 03:45 PM

Jeroen van Rijn

asked 15 Jul 2020 at 02:42 PM

Jeroen van Rijn
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Hi Marshall, I have just purchased a Code 100h and 412 that sounds great, however, I notice that when I play a chord there is a sound coming from the amp after the chord dies down that sounds like a cyclicle click and hissing. I have tried different leads and plugged it in a different socket but still get this consistantly after holding a chord down?

asked 18 Feb 2020 at 11:35 AM

Michael Lawson (2)
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Bought a CODE 50 two weeks ago and LOVE the tones - great reproductions! But I have the hissing problem as well. Quite noticeable as a chord or note decays. At first, thought it was normal 60-cycle single coil pickup hum, but it is not.

Read similar Posts on the Forum, so tried the firmware update and it did not help. Noise gate not really an effective alternative, either.

Team Marshall, any other solutions in the work Again, otherwise I love the amp and want to keep it.

Thanks.

asked 05 May 2018 at 06:20 PM

Michael George (2)
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