Thanks for the answer, sorry now specific my gear:
2 DPA 4061> MMA6000 ( I will receive may be in september)> Edirol R1
Is difficult to calibrate the the level on R1 anyway someone tell me to put up at max level meter, use line in, and work on the level of MMA6000, but in my home I don't have to much db for test the gear.
Thanks however.