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Post subject: Custom Shop Vibrolux
Posted: Fri Feb 06, 2015 11:24 am
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Location: Oregon
I was reading that replacing the 12AT7 in V3 of my Vibrolux 210 Custom shop Amp with a SAG-MHG High Gain Preamp Tube Changing Kit from Groove Tubes : "These kits also work particularly well in Fender Blackface and Silverface amps where the increased gain and current out of the first gain stage combined with a switch from the 12AT7 in the phase inverter to a 12AX7 will yield a much more aggressive tone. These amps which are normally considered to be on the "clean" side will become more aggressive with this kit."
Anyone have experience with this?


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Post subject: Re: Custom Shop Vibrolux
Posted: Fri Feb 06, 2015 12:54 pm
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http://www.music123.com/accessories/gro ... anging-kit


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Post subject: Re: Custom Shop Vibrolux
Posted: Fri Feb 06, 2015 6:17 pm
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Generally speaking, it is true for most amps that a 12AT7 in the PI position will give a cleaner tone, while a 12AX7 in the PI will give a more easily driven tone.

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