Thanks Marco. Yes his preamps are spectacular
I've been a personal friend of John since the early 1990's, jammed with him, been to his house on several occasions, and owned a few different East preamps,
so i'm quite famiiar with him and his electronics.
If i decide on the UNI-PRE 5, i will go to John's home, and take my bass, just to be sure.
I dont speak your language mate, so the YouTube video is not possible to watch