I was playing guitar and tried changing the volume on my amp and once I did the sound completely went out. I can't even play sound connected via Bluetooth on my phone. I don't hear sound either when I connect headphones to my amp. In addition to this, I connected my amp to my laptop and recorded some sound to try and figure out the problem, and GarageBand picked up what I was playing. This problem has happened to me in the past but after I wait for a little the sound seems to come back, but this time I've waited over a week and my amp still isn't working.  Any tips? 

I've brand new Code 50 with latest firmware (1.47).

From time to time, the speakers output turns off. I do have to poweroff OR activate bluetooth detection then exit button.

Clearly, this is a Bluetooh issue - and I need a way to turn it off while playing.

Actyally, I've bought the amp and the original pedal switch because I cannot use phone bluetooth while playing.

Please, this is a MAJOR issue, I really need your help on turning bluetooth off.

I have an incomprehensible problem with the code, I try to connect to the combo via bluetooth connection, but the device is not displayed in the list of bluetooth devices, even after pressing REV + POWER the device is nowhere to be found (I checked on different smartphones) and throughout the whole time the code emits strange sounds of knocks from the speakers that are not solved in any way, I updated the firmware several times, this did not help in the end. Has anyone had the same problem, how did you solve it?

can i hook these up together without any issue or problems? if not, what would be the possible result, in doing so?

I am new to electric and got this amp from a friend. Love the external features, but hate when my phone audio is always blasting when choosing cloud presets. 

In case Marshall decides to do another round of Codes, or for people that want to buy one, here is my bottom line after dealing with this thing for a few years. I had Line 6 experience and wanted a simpler all-in-one modeling combo with a bluetooth app that could do hard rock. The Katana looked like a toy so I bought this.

PROS: Solid construction. Looks great. Good range of amps and effects. Bluetooth app is very good and can tune every parameter. Tones can be downloaded and backed up to/from Marshall site. Amp can sound very good (after a lot of tweaking). The Plexi, American OD, JTM Crunch and Acoustic amps are good. The Guv’nor, Compressor, Chorus, noise gate and all the delays and reverbs are useable. Marshall has done sufficient software updates to correct early issues (bluetooth, tones, bugs). Can be used at bedroom volume with Master on ‘1’. Optional footswitch gives good control. Documentation is good. Updater software on PC works well.

CONS: Other than those mentioned above, all the other amps and effects are bad. This includes the JCM800, JVM and Silver Jubilee. All the cabs are bad. None of the stock patches are usable. You have to make your own. There are user uploaded patches you can try but very few are usable. Learning curve is significant. The amp is too loud. When you turn up from bedroom level to louder, the sounds change and become very boomy which should not happen with a modeling amp. No effects loop. The ‘out’ is a mini USB. Connecting to a computer requires a mini USB to USB or Lightning cable, which is not included. I tried to use the USB to record to Garageband and sound came out but I couldn’t make it sound good. The footswitch also has a learning curve, and like other people I had to have mine replaced. 

ADVICE: Don’t buy it. I bought my Code 50 new from Sweetwater for $299 and now the same version of the amp is $399. If you must have a Code, get the 25 instead. It is cheaper and still absurdly loud. The higher volume available in the 50 is useless because it sounds bad. The extra hundred bucks just gets you painfully loud solid state power amp watts. 

If you do get a Code, upgrade all the firmware immediately. You need to connect to a computer to do this, but first you have to find the cable on Amazon. This is unforgivable.

BOTTOM LINE: I have spent too many hours tweaking the Code. This is what I hated about Line 6. But the Line 6 tones were superior. I never got a good JCM 800 sound out of the Code, after hundreds of hours of work. It’s only “great” amp sim, oddly, is the American OD. Marshall’s own Classic Metal patch uses this, not a “Marshall” sim! The Code is marketed as Marshall technology with amp sims created by Marshall, but it is not. Softube created the software and tones. This is not a Marshall amp. Line 6 Marshall sims are far better.

I have now bought a tube amp. I am keeping the Code because I have mastered it and can practice on it but I would not buy it again, certainly not for $399.

I want to know if its possible to use two effects from the same "area" at the same time, like a distortion with pitch shifter, or tremolo with flanger, phaser, or chorus.
My apologies if my english is not perfect, im not a native speaker

Is there any way to update the firmware on my code 50 without a computer as i do not own one ?

i want to update my firmware on my code 50 amp

I'm assuming I have 100 slots on my CODE 50 for whatever presets I choose. How do I specify which numbered slot I wish to update or change with any of the presets on MyMarshall.com. Not sure if this question makes sense or if I even worded it correctly. 

new purchase. I have a custom Eddie Van Halen replica orginal. Excact copy of the famous Frankie. 

I have spent time on the app and making adjustments however I dont get the sound i was hope for. Perhaps I need to add an FX ex Boss ME-50. To get the sound i am looking for.  ACDC / Kiss / VH. all i get is a little louder version of my guitar. I have watched many videos on line and they change the setting and get classic rock sounds. Like a Gibson or whatever. Classic rocks sounds.  I have tried many VH and ACDC pre programmed set ups and still not he tone i am looking for. What am i missing?

Thanks 

where can I download code editor for windows ?

Is there a specific way I should be using these volume knobs ??? I like a gritty, crunchy, clean sound. Like 70's -80's bands. Bad Co, The Baby's, Foreigner

Hi,

I know that this is a recurrent demand, but please, no more "control the volume using Gateway app" answers, everybody knows that this is a component issue, not a software need for update or anything. The fact is that master volume pots are either low quality ones, or defective manufacturing components. So, all I need to know are the specs of this component (resistance values, taper, etc.) so I can purchase the correct component and replace it myself. Also, understand that I live in a place where there is no authorized Marshall servicing, and my Code amp is over three years old, therefore without any warranty. Again, please no more "send equipment to an engineer" answers, I have enough ability to do the work myself. A good thing would be if you make available the schematic diagrams of the Code amps, but I think that might be not possible. or you would have done it a long time ago.

Thank you in advance for your attention! Marshall Code RULES! But without that scratchy pot...

Best Regards,

Impossible de mettre a jour le fireware. J'ai fais toutes les modifications proposées par le site (chrome : vérification de mise à jour et modification pour acceptation midi) mais j'ai toujours le message "CODE : pas connecté. 

Comment faire cette mise à jour ?

I am interested in buying a MARSHALL CODE 25, but I would need to use the line output (to connect to a mixer or another amplifier), I know I can use the headphone output, but how can I use the headphone output? without disconnecting the speaker from the amp? Is there any way to achieve it?

I recently purchased a code 25 marshall amp and can't figure out which USB is the correct kind for the amp. I want to be able to connect my amp to my laptop so I can record music. 

Which amp is best-code 50 or the valvestate 8040 best opinions?