I recently acquired a used Aguilar DB-659. The level of the XLR output is so low that I though at first it wasn't working at all. After reading the user manual and testing with several mic preamps and mixers, I now think it's probably working according to design. The user manual says the DB-659 XLR out is mic (not line) level, spec'd at -40dB. This is useful for feeding a mic preamp, but useless for driving a power amp or any other input that wants to see line level. Can any other D B-659 users confirm that my unit is/is not working properly? Thanks!