This tuner works well with its built-in microphone, but seems to work even better (quicker) when I use it with this clip-on microphone

great working microphone

I have used this on pianos also, but I find a regular mic works a little easier on a piano.

This works great with my Korg TM-50.

I also have an M-Audio Firewire Solo interface and connecting the mic to its guitar input to record with Logic Pro software worked perfectly well

It's a great price and works like a charm

This works great with a Korg CA 40.

Play in a small dulcimer group and this works great to clip on my dulcimer and plug into my Pignose amp.

The contact mic works well with my Krog tuner

This contact mic works well for tuning a concert harp because it has great range of notes it picks up.