So I just got my CODE50 two days ago and yesterday was the first day I had to play around on it, and that being at a live rehearsal of all places.  I didn't get to do much tweaking, but I noticed a problem with the EQ. If you have all buttons deactivated then the Bass Mid and Treble knobs do absolutely nothing, NOTHING...  I tried using the Natural preamp thinking that maybe the EQ knobs are strictly digital and an amp or preamp needed to be activated to enable the EQ to function.  When the Natural preamp was selected, however, the overall volume (master knob all the way up and the volume knob at 12 o'clock) was so low hardly anything could be heard.  Am I missing a menu option to set the volume or something?

Also, I've saw a lot of people having trouble getting the Marshall Gateway app to connect to their CODE amps, myself being one of these people unfortunately, but I haven't saw anyone come up with a definitive solution other than 1. Updating the Firmware 2. Turn the amp and phone off then restart both of them and try again. 3. Delete the amps Bluetooth profile from your phone and repeat step 2. 4. Call Marshall support.  I can get my Samsung Note 5 itself to connect to the amp (getting a weird message on my phone that says verify such and such number is the correct PIN for the Marshall amp but not having any further prompts on my phone or on the amp after tapping OK, but still connecting regardsless), but when I bring up the Marshall Gateway app and go into the menu to connect to the amp I can hit the scan button all day and it will NEVER find my CODE50.  What the huh?!!!  With all the other people I've saw on this forum having the same problem with the Bluetooth connectivity, you would think there would be a end-all-fix-all solution to such a massive problem. Has anyone heard anything or should I send this amp back for a refund while I still can?

Does anyone know if you can connect Bluetooth headphones before I go buy a pair 

Hello, I ve trouble with pairing my phone - lenovo s850 with Code 25 via bluetooth. I tried it many times, but my phone just cant find amp (bluetooth is on). I also tried another phones and devices with bluetooth but neither it could not find amp. Could it be broken amp or am I just doing something wrong? Thanks.

Hi there Marshall team,

I was wondering if you could help me with a problem that I am having between my Code 25 amplifier and the Gateway app. I am able to pair my android device and the amp via Bluetooth just fine but once I am in the Gateway app it doesn't detect my amp at all, even when I press "scan for amp" it just says no amp detected. 

I think I should add that I have been able to connect it to my apple device without any problem at all.

It would be highly appreciated if you got back to me.

Thank you.

Just got my Marshall CODE 25, and the iPhone 6 will not find the amp on the gateway app or on the regular bluetooth settings. Any reason why?

Hi I have purchased a new CODE 50.  I have the latest firmware update but I'm finding the bluetooth is not consistent.  I have it running on the gateway app and then if I move the phone more the 3 feet from the amp the connection is lost.  The same happens if I play spotify through it the range is about the same.  Can this be imporved or do I have a duff model.  My phone is an iphone 5.

So I just got my Code 25 amp and my guitar will show up in a couple days.

Even though my guitar isn't here yet I thought I would have a little bit of fun with it tonight.  One of the features that I really liked about this amp is being able to play music like from your phone through the amp either via Bluetooth or hardwired mini jack.   I did this tonight and to my surprise it sounded horrible! I tweaked the settings on the amp and of course it made no difference because those settings would only affect the guitar input.   I played the music through the music app on my phone then also through the Marshall Gateway app and got the same results. I thought maybe it was because I was doing it via Bluetooth?   But then I hardwired into the amp and it was the exact same issue. I guess there are other ways to listen to music while playing the guitar along with it but I just thought it was a pretty neat feature to have both sound sources coming out of the same speaker but there's no way that's going to happen.   Unless I'm  doing something wrong?

Absolutely can not get the Marshall Gateway app to work with my Marshall Code 50. I have found the device (amp) on both my Galaxy S7 Edge and IPad Bluetooth settings. I have been able to pair them both to the amp. I get a prompt to use the code to pair the device. I hit ok.  When running the app it says not connected even though I am. The amp Bluetooth light is solid though the app says not connected. None of the app parameters effect the signal. Am I missing something simple here? Ive registered the amp and loaded new firmware update. 

Hey,

i cant find my Marshall code 50 on my bluetooth list. I tried to connect it to my phone and tablet. I downloaded the latest firmware update but it didnt help. My phone is Honor 7 and tablet samsung galaxy tab A. I bougt my amp about month ago, bluetooth havent work at all. What i can do??

Hi. There is no way to connect  throught bluetooth my Ipad2  with Gateway app Code25?  I've read the issue but don't wanna to buy another Ipad only for this problem. Thanks

So...just got my new code 25 the other day and bluetooth hooked up great....played a couple of days and no problems....Tonight..cant get it to hook up.  Any ideas?...Can I ultimatley just hook up USB to my computer and adjust fromt there?

I purchased a Marshall Code 25 Watt amp today, and I am trying to connect it to my phone (Samsung s6 Edge+) via bluetooth, however, my phone will not discover it when scanning for available bluetooth devices. I have reset my phone and cycled the amp, and the problem persists. Are there any known issues with these devices or any workaround that I should look into?

I am experiencing terrible interference when trying to use my Code 50  via Bluetooth / Gateway (Apple) App while recording on my Mac in Logic Pro X.  I am using a microphone to record the Code 50 and using the Bluetooth to change patches.  The clicks/pops/noise/interference is loud enough to interfere with the recording process.  Perhaps a DESKTOP (Apple) Gateway App via Code USB might be a solution for all users experiencing similar issues?   I am running the most current Firmware.  Any current solution to my noise issues?  Thank you. 

Love my CODE 50, but can't use the gateway app to stream music. Can stream music fine through itunes by selecting the code as the playback device. I'd like to be able to use the gateway app to do this. Any suggestions?

Code 50, Firmware was up to date.
I used the amp while practicing for an hour or so with no issues other than Bluetooth connectivity.
However, when I used the amp at band rehearsal, the volume fluctuated and diminished to where I could not thear the amp at all.

Hi,

when I use the playback function the music selected doesn't play within the app.  The music on my iPhone 6 is on Apple Music and I even tried downloading it onto the phone but that still didn't work.  I wasn't sure if I was missing something.....  Thanks for any help!

Mike

I bought a Code 50 today and I'm very pleased with it apart from one thing – I downloaded the Gateway app (1.2.7) for my iPhone 6 running the latest version of iOS (9.3.3) and no matter what I try, I can't get the app to connect to the amp. The amp is set up in bluetooth pairing mode, I've hit the "scan for amps button" on the app so many times my finger is about to fall off! I've restarted the phone numerous times, restarted the amp, you name it. It won't find it. Any advice appreciated!

just got the amp home

spent an hour trying to connect to an iphone 6s...it will not connect

what is the fault...it appears I am not the only one struggling to connect an iphone

I have an iPad 2 with 64 GigB and G3, using iOS v.7.1.

Downloaded Gateway. Pairing not possible most of the time, even when I put the iPad right on top of the Code 25 amp.

When paired, the Gateway software does not recognize the pairing and does not show a Bluetooth device  indication on the bottom left corner. Go to set up, menu shows no Bluetooth connection even after the pairing was successful. Hit the Scan button but, nothing happens.

Please help. Thanks!

I recently purchased the Code 25 from Guitar Center.   I downloaded the app to my Galaxy S5 and paired it with the amp.   Day 1 everything worked fine.   Day 2, the bluetooth connection is dropping whenever I make a setting modification via the app.....very frustrating as this did not happen Day 1.   Can you help?

One more piece of info, the bluetooth connection actually stays active after the Gateway app drops as I can still play audio from my phone thru the Code 25.   It is the Marshall Gateway app which drops the connection after I make any change.   The app appears to drop the connection as soon as I strike any note on my guitar.       Once the connection drops in the app, it will not reconnect.    The only way I've gotten it to reconnect is to drop the pairing and re-pair.   Interesting that when it 'pairs' it always produces a new pairing code.