The Danish website
Pladespilleren.dk tested the Korf headshell against some serious (and more expensive) competition. Here's what they say:
"Very smooth and with lots of details upwards a "clean" sound. There is a calmness in the upper octaves, but at the same time a very fast bottom that starts and stops. ... Overall, the Korf house is one of the most neutral and revealing I have heard. It can make even cheaper pickups perform their best. ... Definitely an excellent headshell."
"Yes, there is a sound difference in headshells, not just these three, but many others as well. I have long since stopped using headshells of pressed plate. The three headshells tested here all belong to the top. Taking the price into consideration the Korf HS-A02 is close to a best buy. Absolutely recommended."