Hi Micky, yes "We learn or die!" but there are some things you should know/do to get a 'baseline' setup and avoid excessive noise and/or overload distortion. To begin with I am going ignore the compressor unit. AFAICS it is not a good one and such devices are rarely needed in a recording path, especially one with the dynamic range of 24 bit digital.
A search of the Roland recorder's manual failed to reveal any operating levels. This is crucial information if you are to avoid N&D. I have however divined by certain assumptions that it is a "minus 10dBV" device, that is it operates at an average input level of 0.316 volts whereas 'pro' equipment OP level is +4dBu, just over 1 volt*
This lower OL would not be a problem except for the fact that you are driving (the LINE inputs I hope!) from a pre amp that DOES deliver close to pro levels (max out around +20dBu, about 8 volts!) The result of this is that if you setup the gain on the Behringer pre amp for 'normal' or 'optimal' operation, the resulting signal level will overload and distort the inputs on the Roland I am sure.
You may be able to back off the output level from the Berry (I am NOT wading through yet another manual!) but if you do I am sure the noise level will become intrusive. In a word, the two units are not well matched.
There is a solution. You can attenuate the output of the pre amp. This will allow the former to operate at its best level but send a reduced signal level to the Roland. Problem. You need some soldering skills to make said attenuator.
So,
1) Have you tried the mic straight into the Roland?
2)If yes and that was not satisfactory, connect JUST the pre amp to the recorder and play with levels to see if you can find a happy balance twixt noise and overload.
3) Forget the compressor, at least for now. It might be useful in the future for 'effect' but you do not need it in your recording path.
*If these technical terms bother you...GOOD! Shows you are at least reading my guff! Fact is, this recording hobby IS technical to some degree and, like Golf and Photography there are basic concepts and jargon you must learn. I, and others here can explain further.
Dave.