• 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.

How good are these?

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A need help...altough I'm happy with my Dodd Pre-Amp, I've been offered a pair of these 6922.
They have gold pins, Made in Germany and marked "VIS" as you can see in the pics attached. Price: about US$45 for the pair.
I've been searching and the only VIS reference is about Acoustic Research gear:confused:
Thanks for your help, I'm not an expert, just love the tube sound :)

sch
 

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