On Sat, May 13, 2006 at 06:00:52AM +1000, D. Sen wrote: > Look at the specs. The output is definitely line-level. I did look at the specs! Maybe you posted the wrong link? What I'm looking at has nothing in common with a mic preamp, except that it provides some gain. >>http://www.bksv.com/pdf/4416B.pdf Some relevant excerpts : "Endevco model 4416B Battery Powered ISOTRON Conditioner" ... "is a small, battery-operated, low noise signal conditioner for use with ISOTRON or other piezoelectric voltage mode transducers." ... "TRANSFER CHARACTERISTICS GAIN 1 or 10 selectable" ... "CONNECTIONS BNC for both Input and Output" To misuse Magritte: Leci n'est pas une microphone preamplifier. Did you maybe post the wrong link? -- Paul Winkler http://www.slinkp.com