My amp is the code 50 and it has sooooooo many different things you can set. I think the code 25 is the little brother, so I guess you can choose many different settings about preamps, amps, speaker and effects and the hundreds of combinations just like the code 50.
It took me a while to get a sound I want to practice with. It’s kind of harder to learn “playing” the amp than the guitar. 
Do you know the marshall gateway app? This is a great app, where you can make your own presets or download a ton of other users presets.
I would suggest to give your code another try. Hope you’ll make friends with the amp and have fun
Edit:
Good advice from @Majik in another thread on how to create your tone: