Dandan, how does your Kono compare with Rokutaru? Which one do you like more?
I'm playing on my recently aquired Japanese guitars today and comparing them. They are not fully settled and opened yet but I'm hearing their voice already. I would say the best one is the Japanese-labeled 1967 Rokutaru Nakade, the sound is incredible and it has a "mystical" horizon and space/depth behind the first layer of sound. I'm not good at describing sounds. Rokutatro's sound is darker compared to my other guitars (and I like that!). It's also very playeable and forgiving (doesn't highligh imprerfections and unwanted sounds).
The Kohno 1967 is also a truly amaizing instrument with beautiful and powerful sound, BUT it doesn't resonate with me as much as Rokutaro, I do not hear that mysterious soundscape. Then Sakaze Nakado also has lovely sound with a lot of resonances, but it's sort of more simplistic compared to Rokutaro and Kohno and it's lacking that sound "horizon" and depth.
Now, if I compare it with my Bernabe I would say I still like Bernabe more, its sound also has a very mysterious and beautiful "silvery-pearly" soundscape with depth and space and it's very "nobel" and refined. Overall, all these Japanese guitars sound a little "boxy" and more simplistic compared to Bernabe. But still the Rokutaro's sound has something special and mysterious that even Bernabe and Kohno do not have. As a disclamer, of course this comparison is based on my personal musical taste only.
I also got another Rokutaro A1 model from 1962 (with label in English) and that turned out to be quite mediocre instrument, good sound overall but not anything outstanding. I guess the 1967 Roukutaro with label in Japanese was probably a custom order for some Japanese customer.
I also have Mutsuru Tamura coming, and that will likely be the end of my journey into the world of Japanese guitars (at least for now), I need to settle with what I have. Too many guitars is overwhelming.
Paulino Bernabe 'India' 2001
Masaru Kohno No.6 1967
Rokutaro Nakade 1967, 1962