• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Help identifying valve preamp and specifications etc

My father in law (now suffering dementia) has one of the pictured valve preamps built in a glass spherical shape. Can anyone point me to further information about it? Thanks!

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Thanks Jean-Paul. Unfortunately Midnightmayhem I only took a single photo and I've left Japan where the unit is. I thought its design was so distinctive that someone would recall seeing them before, and I am surprised it's so hard to find out about it. I suspect Kenjisan bought it either complete or as a kit, because it has a silk-screened top panel and I don't think he would have done that himself. I think he's had it about 5 years. I like the 'ship in a bottle' analogy.