Shadow SH940 Violin Pickup

We brought 2 of these, - we're a touring folk band...

They sound dreadful they give a thin, screechy, horrible sound!
What it needs is a serious preamp right up in the unit itself to prevent signal loss, which all piezos suffer from.

The cable that comes with it is cheap and nasty and if you are inexperienced with violin bridges you'll need someone else to shape and fit the bridge for you.
The volume and tone controls are pretty ineffective as all they do is cut the signal.

if you have access to a lot of good effects units and professional sound technician you may just get a reasonable sound from it.

You're better off spending an extra 50 to 80 Euro on something better.