ok when i use the nn-xt for a base line and go to add a kick to it, the kick messes with nn-xt sound

And it other times it acts like it only has a cretin amount of power so when one sound is going and i bring another one in the other one bogs out

What do you mean when you say "bogs down"? If you mean looses its low end or looses its volume then check your compresser settings in your mclass suite device (only if you're using it of course)

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it gets quitter when more sounds get added

Okay yeah are you using the mclass suite combinator as your final output into the hardware interface? if so delete the combinator and see if it makes a difference. Chances are you have a compressor that's keeping your audio from clipping when your output reaches a certain level (when your kick and bass are playing at the same time). I'm trying to put this as beginner friendly as possible if you don't understand how mixing works, lol I'm not doing a very good job though.

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ok i used fl stuidos befor this and you could make a layer and that is just when u hit a key once it play how ever many differnt sounds u wnat it to

So is there a way i can make it when i hit a key it plays a kick and bass or 2 different synths

ok i will try it

Yes there is, it's called the combinator device, it can be used to combine instruments, and effects. I suggest you read up in the reason manual about it or find some tutorials for it, it's a very useful tool in reason.

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