hi, im looking at upgrading my ART tube preamp systym to a more high quality pre(1 or 2 channels). im looking at something like an avalon but want to be more educated of other choices that may be out there. i have a Neumann tlm103 and will have an akgc451. i want a pre amp that will sound great with whatever mic i upgrade to in the future as well. the kind of tone that i want is something that isnt colored too much. i want a very "open/vintage/natural" tube sound. is there anythying out there that is in the price range of about 1,300-1,500$(used). please help and thatnks a bunch!