• 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.

VR tube recommendation

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I've tried multiple types of 0G3 tubes in my "Franks Ultimate Preamp"...
but holy cow... throw in a pair of Mullard gold pin 5651's and we are talking a whole another level. I absolutely cannot believe the difference...
I NEVER would have thought this tube could have this much influence. I rolled all sorts of 12BH7A's, 12AX7's and 12AU7's in this preamp... I got improvements for sure...but ... nothing like the WOW I got from this VR tube.

Just FYI.
 
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