I own a Code100 2x12 combo, and after a couple of months of use I am now dealing with some very noticeable fuzz and crackling. It does not matter what volume I am at... 

Things that I have tried...

*Firmware update
*Using a distortion pedal and changing my preamp to clean as well as acoustic.
*Performing a factory reset

As you can imagine I am pretty frustrated... Has anyone else dealt with this issue? If so...what is the solution, please and thank you...

Yeh.  I'll bet the title of THIS post caught the attention of a few folks!!!  LOL!!!  Sorry.  It's not an effects loop as you would know it!!!

As you all know: there's no effects loop on the CODE 25 and CODE50.  I've not found this to be an issue but I would like to try and hook up an equalizer (Boss GE-7) to try out.  I've have tried putting the pedal in the front but with high gain amps. like the JCM800 the noise levels lift WAY too much especially if you're using PRE FX like distortion (and REVERB and DELAY make the situation worse).  In addition to this there are certain pedals that just should be in an effects loop and not in front e.g. TC Electronic's MIMIQ.

So here's my plan (which requires two amps.) (and which is the reason I said "it's not an effects loop as you would know it!!!" above):

1 - Guitar straight into amp. 1 (say a CODE 25).

2 - On amp. 1: ONLY PRE FX and PRE AMP are turned ON i.e. everything else is turned OFF.

3 - From amp. 1: take the LINE OUT (HEADPHONE) to a REAMP box (this to reduce the output level from amp. 1 from a line level signal back to an instrument level signal) (and this so as not to blow up your pedals or second amp.).

4 - From the REAMP box: to pedal (or pedals i.e. however many you want in your "loop").

5 - From pedals: into amp. 2 (another CODE 25 for example) and on amp. 2 PRE FX and PRE AMP are turned OFF and everything else is turned ON.

Can anybody think of any reason why this would NOT work???

It IS INDEED an effects loop i.e. your effects are now sitting between the ouput stage of a PRE AMP (amp.1) and the input stage of a POWER AMP (amp. 2) which is indeed a normal effects loop as we all know it (this just being a very long winded way of accomplishing the same thing).

Yeh.  I know.  I could just try it but I'd rather get some outside input before I go blasting my amps. because there's something I've not thought of here.  Oh and don't worry: I won't hold anybody responsible if things go wrong!!!  LOL!!!  Oh and don't worry Marshall i.e. if memory serves me correctly all but one of my amps. are out of warranty!!!  LOL!!!

Regards,

Dale.

P.S.

If Marshall would be so kind and forthcoming so as to give us a clue as to where the effects loops connections are on the CODE 100/100H???  I've a feeling that a "proper" effects loop could very easily be "installed" on a CODE 25 / CODE 50 IF you know where to splice into the internal connections!!!  I say this because bear in mind that ALL of the CODE range use the same firmware and the front panels on the CODE 50 and CODE 100/100H are pretty much identical.  And I also believe there is already a clue in the sense that on the CODE 100/100H: the LINE OUT (HEADPHONE) socket disables the effects loop.  Hmmmnnn...  Unfortunately I don't have access to a CODE 100/100H (at least not the type of access that will allow me near one with a screwdriver in hand!!!  LOL!!!).

Please read this post in the spirit in which it is posted.

I monitor these forums regularly as I have five Marshall CODE amps. and I guess I like to see what's going on and stay up-to-date.  And I suppose I enjoy sharing my knowledge and helping others where I can.  I must also note that I've not had any of the issues described on these forums with any of my CODE amps.  And I must also note that I think they're the best modelling amps. around i.e. they're Marshalls and enough said.

But what concerns me (and hence this post) is this: there really does seem to be a lack of interest on the part of Marshall Amplification when it comes to the CODE range (at least here on the forums i.e. if emailing Technical Support yields different results then I do apologise) (and given the fact that I've had no issues at all with any of my CODE amps., as noted above, I've never had to contact Technical Support so I would not know).  It's almost as if Marshall regret the day they got into this modelling business (and if that's not the case: sorry but that's my personal impression at the moment after, what, around eighteen months or so of monitoring these forums???).  I mean to say: there are so many posts around here (dating back) asking for feedback re: apparent bluetooth issues, projected dates for new firmware updates, etc. etc. etc.  And no answers.  There's even been one or two posts asking if Marshall is going to continue with the CODE range or if it's something they want to get away from.  No answer.  I think you get the picture.

The above being said: I do understand how frustrating it must be to be asked the same old questions over and over and over again ESPECIALLY when a forum member couldn't even be bothered to search the forums for an answer before posting and asking a question or before reading the manual.  Hell: if I had a few USD or GBP or EUR for every time I've answered a question on here re: standalone software to control these amps. well, then, I'd probably buy some more CODE amps.!!!  LOL!!!  Point is and all jokes aside: I do get it.  But it's no excuse for a lack of response on some very key issues (like those mentioned above).  And what's more: for some they're not asking for favors i.e. they're quite willing to help themselves but need a little bit of input (the Master Volume issue comes to mind here) and they just don't get that input.  And (back to the firmware issue): some are even prepared to roll back their firmware to a previous version as (apparently)  some issues were not issues in previous versions i.e. they're not even insisting that a new, immediate, firmware update with fixes is made available.  Fairer than that I don't think they could be.  But: no response (or, in some cases, a very non-committal response anyway).

In closing: I don't know if I'm correct in my assumption that Marshall isn't too interested in this CODE range of amps.  I also don't know if, maybe, this (perceived on my part anyway) lack of interest is because this particular market is quite tough nowadays (what with other modelling amps. and a plethora of plugins and the rest of the junk out there) and maybe the core business (the more expensive and professional products) is being conentrated on and these CODE amps. are just an irritation.  But you need to know this (as I have noted already): they are STILL Marshall amplifiers.  And there is nothing on the market (whether it be another modelling amp. or a plugin) that sounds like these amps. (or, at very least, comes as close to emulating the more expensive and professional Marshall valve amps.).  So they are actually something to be proud of Marshall.  Just bear this in mind going forward.

As I said: please read in the spirit in which this is being posted.

No response is necessary either.  But please do take cognisance of what I've posted above going forward.

Regards,

Dale.

Hey Marshall,

I visited the dealer recently and tried another CODE 25 amp in the shop with the same latest FW version.
The same bluetooth behavior was observed (as described in many threads here, for example this ).
If you insist that it's a HW problem - please make an official statement that CODE 25 amps with serial numbers XX-XX have faulty Bluetooth Modules and you would like to recall/replace it. I think you can easily check your production and make a quality check on this case.

I think there are only few ways forward:

-  a FW update with a fix, promised a long time ago. Is it really so hard to rollback a piece of code, revert some changes from the latest FW update? 

- official recall, so that we just return it and get a 100% working unit instead.

- make the firmware code open source, so that we could fix it ourselves and make further improvements.

Regards,
Ilya

Recently got the CODE100H and it has a problem where if I save a preset the amp freezes and no sound comes out.  Could this be a firmware bug? It happens often, a few times it saves successfully but most times it locks up.

My code 100 started making a noise recently. It is a high frequency hum. It is particularly loud with spicific presents, but it there with everything. I updated the firmware and that didn't fix it. When I factory reset it, it goes away until I turn it off and on again. Also, if I turn on the amp while holding down the "amp" button, and don't conferm the reset it also goes away (until I restart it.) Thoughts?

Hi, I have a Marshall Code 50, purchased in the US in 2016. I moved to Germany by the Dec. of 2017 and for whatever reason it stopped working. The PSU was replaced and the latest firmware at that time installed (repair done at Musik Meyer).

It worked fine until today, when the bluetooth is not connecting anymore. Any of my devices with bluetooth can detect the amp. I already tried installing the latest firmware, reseting to factory settings, "last resort" process on troubleshooting guide.

How can I get this issue fixed?

Hi all! I'm a very pleased user of a CODE 100 combo. I'ts a quite wonderful tool for those that cannot achieve a Boutique or Vintage tool.

 Until this time I used it at home mostly with Headphones, due it's power is very high to set it for speaker use.

But this weekend we had an oportunity to use it on a live presentation. That day the amp showed some problems using the speakers: In the middle of the presentation it suddenly lost volume, staying turned on. Obviously it was a very unconfortable situation, and my only reaction was to turn it off and on after a few minutes. This failure happened at least 5 times.

There are many supositions I made about this issue, before sending the amp to my dealer:

1)  The voltage mains was under very high fluctuation values.

2)  Firmware glitch

3)  Broken Master Volume pot

I'll check the amp and see if this problem is still happening. Do you have any other diagnosis/solution to tell me? I'm very worried about this problem

Thanks in advance to all,

Matías

Does anybody else have a noise issue after an update on the firmware?

My Marshall code 50 was dead quiet until I have made an update on the firmware. 

Hi, I already asked 03 Apr 2018. 

(https://my.marshall.com/forum/question/1308/there-is-a-problem-with-the-bluetooth-connection-since-the-firmware-update.?filterType=recent&myActivity=True)

But there is still no news of the firmware that fixes the problem. How long do you have to wait?
If you plan to take a long time to upgrade your firmware, be sure to downgrade to a version older than V1.41 that has no Bluetooth issues. I am very angry about your unreasonable follow-up care.
Hope to have a quick solution.

I see that the Bluetooth issue I am experiencing has been going on for some time now. I just bought this amp but I wouldn't have had I known how frustrtating it was going to turn out!

The whole appeal of this amp was that I could sit back with my phone or ipad and diddle with the settings peacfully. But no, you can't do that becasue first  you have to pair the amp and phone/ipad EVERYTIME you want to use the gateway app. 

Come on guys, really this is ridiculous. How many other people are complaing about this very issue. You can't sell a half baked product and not fix it. At very least allow us to roll back to the previous firmware. 

How do I Know if my marshall's firmware is actualized??

Bluetooth issues with the latest firmware and Code amps are well known (v1.41).  These issues did not exist with the previous firmware.  I'm sure many would simply like to revert, but Marshall has been telling us they have been working on fixing this since October of last year.  Alluding to new firmware coming for quite some time now... 

My questions are simple.  Can you give any sort of an actual ETA for the next firmware revision for the Code amps (Code 25 in my case)?  If no firmware revision is soon forthcoming, will you offer us the option to revert to the previous firmware until an actual fix/update is ready?

Not asking if you are still working on things here, or if you may consider a revert option.  Asking if there is anything solid to give us here in hopes the issues firmware v1.41 has caused will soon be resolved (or not if that should be the case). It's been long enough I think, please just let us know.  

Like apparently everyone else, my Code 25 "forgets" to turn on Bluetooth, and I have to restart the pairing process all over again, everytime I want to play.  I have to delete the pairing from my phone, turn on bluetooth pairing on the amp,  and rediscover the amp.  EVERY FREAKING TIME.  Where's that update to the firmware?

I love my Code 50 amp but lately, it's having a problem where there is no sound coming out of the amp after a couple minutes of turning it on. The only way to fix the problem is to turn it off and on. However, this only fixes it for a couple minutes. I've already instaled the latest firmware.

Hola,

Compre un code 100h recientemente y realice la conexión vía Bluetooth, pero genera un ruido como un pitido muy molesto, ya realice la actualización del firmware pero continúa, realice un cambio de ubicación para descartar interferencias y revise polaridad de las tomacorrientes, pero aún se mantiene el pitido, alguien me puede ayudar ¿..?

Gracias

I just bought a Code 50 amp today in the LA area, and am very excited about the sounds I have already programmed! Mine came with firmware 1.11 ~ Has a lot been improved since that version? So far, my only disappointment has been that the Clean American amp model has bad problems with the noise gate trailoffs (introduces a fuzzy distortion as chords start to fade) ~ I haven't noticed this on any other models yet. Anyone else?

Thanks,
Hadley in LA-LA Land

PS: Is there any reason I cannot see the answers to all the forum questions?

I just downloaded v.41 firmware to my code but when I turn the amp on it still says v.11. Why?

HI ,

I`m trying to use my BOSS Gt-100 as a Midi controller to change channels on my JHS410H.

It works...but sometimes amplifier doesn`t change a channel.

Looks that it`s amp fault, because gt100 sends PC messages on each press.

I think that JVM gets sometimes confused because all messages out of GT100 comes in formula: 2xCC+1xPC.

Could you advice how to deal with it? Is there any option to change a firmware on JVM midi module  to make communication more realiable?

Thanks.

Kris

I guess with Marshall being a small company without much expertise in building amps, this should be expected.  Maybe once they've been around a while and get the hang of building amps then they'll be able to release products that work as advertised and that they are also able to maintain and provide support for.

Hang in there Marshall, you'll be a good amp company someday!