Some words by Shinobu Karaki (Vida's builder) about devices used in this phono amplifier.
"VIDA is using JFET transistor input, bi-polar transistor output, those are NEC and Toshiba made in period from 1970 to 1990. This era was transistor golden age, like vacuum tube in 1950-1960. Audio specific low noise, very good linearity and high gain amplification transistors were developed. After 2000, there were no good transistors , because all electronics were changed to digital, and all LSI. Currently just few transistors are manufacturing for digital switching application, of course those are not good for analog audio."