Hi 2 All I am building a phono to aux preamp based on LM4458. the output is too low if compared to real phono input. my question is: Are the voltage supply to the OPamp effect the output? now I use +-9v supply. I cant test it now, cause I built fixed PSU. Regards Tal Bejerano AMC - ISRAEL -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.