Cancel those accordion lessons!
(Sorry grandma!) You
won't be able to let go of your guitar when you hear the pro
level tone and added features of the amazing NEW and
easy-to-do Mercury
Upgrade
Kit.
You can turn your "Tiny Terror" into the tricked-out "HOLY TERROR" with the help of Mercury iron and a few cool Alan Cyr circuit tweaks.
It's our simplest Upgrade Kit, yet. All you (or your amp tech) do is swap the transformers and make a few minor circuit mods. The kit also includes an optional Pentode/Triode mode selector switch that more than doubles the tonal possibilities!
What do you get? Oh man, it's H-U-G-E!!!! Orange attitude 'till it's busting at the seams. Throw away the straw because this is true big gulp overdrive with your Orange drink!
Our
"HOLY
TERROR"
Upgrade Kit features
custom-tuned performance Axiom
series transformers. The same or
higher quality as those used in boutique amps costing substantially
more. After you hear the improvement you'll never settle for stock
transformers again. The improvement in tone is
beyond dramatic. Remember, more than any other component, your
amp's transformers determine its tone.
| Check out these YouTube demos of the "Holy Terror" by Bob McGilpin of MVamps.com. | ||
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LA Amp Show discussion of the "Holy Terror" project.
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"Did this Upgrade make a difference? Big time!" -- Ev Southwick
"This thing was simply unbelievable at band practice on Saturday. It was like the amp used to project in black and white and now projects in color. The tones are complex and thick; they were never thin or weedy at all. This little box not only sounded great in the mix, it owned the mix. Especially noticeable when soloing. I went from Gilmour to Van Halen to Billy F Gibbons and was in heaven the entire rehearsal. My band mates were looking at this little white box and just shaking their heads at the TONE! They didn’t know why it sounded good, but man they felt it. It is now one of the BEST amps I own. You have made me one very happy guitar player." -- Brian Hilty
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The "McMod" by Bob McGilpin
Attention existing Kit owners: If you already own the "Holy Terror" Upgrade Kit, give us a call. We'll send you the instructions on CD-ROM and the Mini-Choke or MultiChoke of your choice for only the cost of the part! |
How
about a MultiChoke?
Taking the addition of a Mini-Choke one step further these photos show a "Holy Terror" Upgrade with one of Mercury's new MultiChokes installed. The MultiChoke was invented by Mercury engineers to allow amp techs (and savvy amp builders) to easily sample different choke values before selecting the best-sounding choke to install.
The MultiChoke shown in these photos allows for five different Henry values (1, 3, 5, 7 and 9) to be tested. But Mercury also makes other variations, depending upon your need. And we're beginning to see amps that utilize our MultiChokes with rotary switches that allow the values to be changes on the fly! Very cool! We also built a rotary switch demo for the LA Amp Show (see below).
The MultiChoke is installed following the Upgrade Kit manual's supplemental instructions for the "McMod." The only difference is that you must solder a lead from one of the marked MultiChoke terminal values. You can then easily resolder to each subsequent terminal to test the amp until you've found the optimum sound for your amp. It's really easy to do, and will provide you with extremely informative and usable results. Tweakers love the MultiChoke because it allows them to easily find the right tone for their playing style.
The MultiChoke is sold as a option to the Upgrade Kit (see pricing below), it's inexpensive and you'll be blown away by the results.
 As a special demonstration project for the LA Amp Show, we built this MultiChoke version of the "Holy Terror" with a rotary switch that allowed all 5 Henry settings -- plus the original resistor from the "Tiny Terror." The tone shifts subtly at each setting, but the most radical tonal improvement occurs with the original resistor pitted against the 9 Henry setting. Indicating that a 9 Henry Mini-Choke is the best way to go. |
