I've bought a few of these little preamps to power the tiny little Panasonic microphone capsules I'm using inside the teacups. They need to be soldered up to a power source and mics at one end and and output jack at the other, should be fairly straightforward.
Soldering the little mic capsules is proving very fiddly indeed and I have wrecked a few already so have had to make another order. They're just so small and I think the soldering iron heats the capsule
up too much which is breaking them. I've spoken with a tutor today who has given me a few new ways to do it, and some soldering advice which should help.