Re: inline battery preamp - any use with HD recorder?

["oryoki2000" oryoki2000]

Ideally, this device should not change the quality of the signal.  It
just boosts the level of the signal produced by the mic from that
appropriate for a recorder's microphone input to the level needed for
a line level input.

Changing the signal to line level will help when using a recorder that
doesn't have a mic input (like the Sony HiMD MZ-NH600) or a recorder
that has a line level input that sounds better than the mic level
input (like the Zoom H2).  I don't think there's much difference in
quality between the  iRivier iHP line and mic inputs, so no advantage
here.

I'm suspicious that such an inexpensive gadget might add extra noise
to the mic signal.  But it won't cost much to find out.

--oryoki