Unfortunately there is no koetsu factory site to clear all the questions , i have the wajima and its very good i have also heard the black on several occasions and a stone body i cant remember the type also very nice i dont think you can go wrong with any of them
Koetsu Urushi: Blue Sky, Vermillion, Tsugaru
Does anyone have any knowledge or experience about how these Koetsu Urushi models differ in sound? I know the Blue Sky and Vermillion have lower output, and that each have different coil materials, but how does this affect the sound, particularly the sound of the highs?