there's something that sounds like this being sold on harmony central right now. not cheap, but not outrageous (at least to me). it's under the hearding "COMPANION FY-2 FUZZ (Fulltone, Muff, Face, Zvex)."
i'm not affiliated so don't ask me about anything . . .
From: email@example.com [mailto:firstname.lastname@example.org]
Sent: Thursday, November 08, 2001 10:12 AM
Subject: Re: OT: Japanese fuzz box name....
Sounds like Shin-ei, a quick look around Musictoyz found a mention of them
briefly putting out the Uni-Vibe in the 70's, but I'm sure a little more
research would find your fuzz pedal.
>I'm sorry for this off topic question, but I was talking on the phone, long
>distance to a guy about effect pedals. He mentioned this old sixties
>Japanese fuzz box with "a really old-fashioned fuzz sound", but I couldn't
>hear the brand clearly. It sounded like "Sen Jai" but I don't know Japanese
>Does anyone have a clue what fuzz box this could be?