I started to search a new pickup for my „loud“ band... I narrowed my interest to this interesting two product.... Both are not so widely used, but both are seems very quality product. Many of players says, the K1 has low output, but the Yamahiko has very hot output, what can easily distort amps input... A have many different kind of gigs, play different band, different rental amps, doubling etc. I’m afraid of dealing with complicated gain staging! Have you got experience of both pickups or one of them?