Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Harpsichord Tuning

I've successfully used this tuner with all three of my harpsichords, two guitars, and one piano. Previously I used an electronic tuning fork device from Tuner's supply to match my tuning audibly by listening for beats. I'll admit that method worked for 25 years for me, but I like the Korg CA-40 better. I get the tuning done a lot quicker with the Korg visual method than with the traditional audio method. I even tune each of the three strings per note on the treble section of the piano with it. Listening for beats is OK, but centering the needle is easier for me, as I'm a performer and not a professional piano tuner.