Ok, the buzz, fuzz I and others noticed (Its Real). First before you ask I tried the cable and the guitar on my Crate Amp. The notes ring like a bell No fuzz or Buzz.
So that eleminats my guitar and cable. I notice if I use eather the Acustic or Natural Pre Amps on my Code -50 the BUZZ / Fuzz dissipears. So I assume its not a hardware issue with the Code 50. I think its a software issue. Is it possiable to fix and down load new Pre Amp Modelse to fix the problem?
I would love to get this fixed! Its annoying!
Thank you for your comment, its hard to look into your issue without hearing the issue itself, we would suggest you return the amp to the dealer to get a qualified engineer to look at the amp, and to then either replace or repair the Code.
One of possible reasons is you use too much gain. Try to choose Clean American preamp and set gain to 2.0 with no other sections activated, than let us know about results, it will help to diagnose your problem.
Yes the gain must be set very very low and then increase the volume on the amp and guitar to get a loud clean sound. Some of the pre amps / Amp combinations are worse than others. Perhaps the instructions should instruct the user to use a little as possible.
Only first five preamps are supposed to emulate clean sound: JTM45, CL DSL, CL American, CL JVM and Acoustic simulator. All other preamps give crunch or overdrive even at very low gain. For some guitar players who looks for heavy sound, the combination not acceptable for you may be the most desired one...
The biggest advantage of digital amps is enormous variety of sounds, which does NOT mean that everybody has to use all of them. But everybody can find his own favourite sound matching his personal preferences.
You are not crazy. I have a Code 25 that was bought back in December 2017, and it didn't show any problem and sound was very good, as you didn't have to lower gain or other parameters to avoid unwated noise. Perfect modeling amp. All of a sudden yesterday night when my daughter was practicing, she yelled at me because a strange buzz and static-like sound appeared literally out of nowhere. I thought It was the guitar's volume pot because I couldn't lower the volume directly from the guitar, so I naturally cleaned the guitar's electronics.
Guess what? I plugged the guitar back to the Code 25, and still showed problems. Changed cables, same problem, only worse. So I plugged the guitar to my PreSonus AudioBox interface... the sound is extremely clean. Ran the guitar into some amp models in Garageband, MainStage and StudioOne, no problems AT ALL with the guitar. Very good sound coming out of the whole recording rig, no noises, static or buzzes whatsoever.
I go back to the amp. Lower all paremeters way down, and discovered the same as you did: problems come up if Amp and Power models are active. Out of trial and error came up to the same conclusions you posted: only the Natural amp is good to use, no Power model active. The rest of the parameters like pre FX, modulations, delays, reverbs, and cabinet models do not add the static buzzing sound. Turn them all off and the combo sounds great, no sound issues. As a last resort, I changed power outlets from a circuit on our home's upper floor, to a different circuit at the floor level that has no devices like fridges or TVs plugged in. No good.
Updated and then reinstalled firmware, as well as resetting factory presets were no use. I just signed up to this forum so I could post back that I have the same problem as you, and I can tell you: IT'S NOT THE FREAKING GAIN OR ANY OTHER PARAMETER LEVELS. Something happened all of a sudden that messed with those model sims. I just plugged in my Gio bass guitar just to be sure: same buzzing, static noise are there.
By the way, we do not use the iOS app for amp tweaking, neither we use the Code 25 as a recording interface nor its Bluetooth features.
What's going on, Marshall?
Hi Joe... I think we have similar issues, but I never had problems with the gain an volume knobs until the problem came up. No matter how low the gain or volume were set to, the noise was there. Like I said, at first I even thought the guitar was the problem because it seemed that you couldn't even lower levels using the guitar volume knob for some brief moments. I forgot to mention that noise was present even when using headphones. Now I can lower or raise gain and volume without those garbage sounds (good levels matched to the instrument's output, of course... if you turn gain or volume way too hot, you do get normal distortion, like other posters sugested.) Again, I think it could be related to some sort of software problem.
Any fix on the buzz ? Reverting to natural restricts the amps value
I have the same issue, after test a lot of components, I believe it's the Input/DSP Board. But the only place I found to buy a DSP Board to replace is an English online store and for EUR 189,00... it's too expensive unfortunately to justify the replace.
The guys from Marshall just ignored my questions about replacement parts or Services in Brazil.