Thanks to all!! I really apreciate so much your answers.
The thing is a got this preamp just to not do any circuit by myself, cause my knowledgment in electronic is really bad.
In this proyect the guay allows to use the op Amp of my preAmp (TL071).
which one could be the easiest way ,(no matter if tha final quality is not really good) to get the guitar frecuencys through this preamp I have and something else if needed...
I live in the countryside and maybe I wont recieve any piece I need till next week, and the only thing i have here is the preamp and arduino(Ok maybe I can find any resistor from any old electronic device).. My project should in one moth and Im really am in a hurry!
no worries if you cant help me!
Thank you very much.