I found a cool interview with tetsuya (not sure of the year but at least 2006 or earlier) where he discussed getting his first Zon, here's a snippet:
- Why did you choose a ZON?
[Back then, I was thinking "There just aren't any good basses around...". ZON wasn't being used by many people, plus it had a high class image, so I thought it might be good (laughs).]
- You certainly dont see them much in Japan, and there very few musicians who use them.
[That's right, and it cost me about 800 000 yen. I wonder if it still costs that much... I figured "Can't go wrong with something this expensive". That's the price, the real price (laughs). At the time, Pearl (instrument makers) also ran an import agency, and someone from Pearl gave me a ZON Legacy Elite to try out and play. That is, if I liked it I could just buy it as it was.]