Electrical/Urei 509

This is a two channel equalizer with true bypass.  Each channel was an old Universal Audio console module that we got a hold of (thanks to Fletcher).  It is a Neve style switched gain, switched frequency, LC/RC filter.  We use it as a passive filter with a make-up gain amp (John Hardy 990 Op Amp).  It is a dead simple eq that has 2 bands (bass and treble), with 4 selectable frequencies each.  The 990 op amp keeps it quiet.  So far it has been handy in adding top end to ribbon mics, and bottom end to kick drum mics.