Journey Instruments Classical Passive Piezo Pickup – EP004K Four Balanced German-Made Passive Piezo Pickup Elements – Piezo Pickup for Classical Guitars

This worked well in a steel string guitar with a bridge doctor. I have never played the 3 piezo version from journey but I have played the 3 version piezo from KnK. I would say there's a little more bass but overall clarity was very good in comparison.

Excellent tone, and powerful enough without a pre-amp. I installed it in a mandolin with a magnetic pickup already fitted, and it's as loud as that at full volume. Of course you may still need a way of adjusting volume and tone for live performance. Comes with everything you need to install it on a classical guitar (which it is designed for), with a QR code to link to PDF instructions online. I had a struggle to get it into my mandolin, but I managed it. The process would have been a little easier with the 3-element version (EP001K) of course, but the price is the same so why not have the 4th contact?

Installed on my 12 string. It sounds absolutely amazing. Low, mid, high tones are all perfectly balanced. No hum, no feedback. When cranking the amp, it sounds just as clear. Incredible product. Buy it.

Great passive pick up. Clear and clean

these work. the only difficulty is fitting them. they really need to be glued under the bridge of your instrument, and that is non reversible. The sound quality is excellent. I have put them in two guitars now.