Boutique-quality TONE for less than $400?!?

Inside of all the greatest-sounding amps ever built lies buried treasure. The source of this profound and amazing amp tone is the transformers. Pro-quality transformers are not easy to build and they are also comparatively expensive. When an amp builder is unaware of, or chooses to ignore this fact by installing cheapo transformers, the tone of the amp tells the tale.

If you find playing your amp fatiguing or just plain boring, if your childhood memories of Uncle Bob's "armpit fart concerts" sound better than the amp you're stuck with, then you are probably an unwitting victim of tonally anemic, low-budget transformers.

To help prove the point, Mercury designed an Upgrade Kit for the remarkably inexpensive Valve Jr. amp (combo or head). This demonstration Upgrade Kit features high-end, pro-quality performance transformers like those in great-sounding amps costing anywhere from hundreds to thousands more. Our Upgrade Kit makes the modified Valve Jr. the lowest-cost introduction ever to the wonderful world of boutique amplifier tone.

Ever wonder how much better YOUR amp could sound just by Upgrading its transformers? Here's your chance to discover the night-'n-day difference.

You can experience pro-grade tone with all of the feel and expanded range-of-control the pros enjoy -- without draining your wallet!

The Upgrade Kit that will change forever how you define guitar tone

I finished the Valve Jr. Upgrade over the weekend. AMAZING!!!!!!!!!! I have been playing guitar for 21 years and this is, without a doubt, one of the best amps I have ever played -- and it only cost me $400 total!!!!! Unbelievable!

I have a new found respect for the iron that is used in all my amps, and more specifically for the fine people/engineers at Mercury. Way to go!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

-- Jonathon Short

"Update on my Valve Jr. Upgrade! Wow, nothing but kick ass, balls-to-the-wall tone!"

-- Gilbert Cruz

"The amp tech was floored. He couldn't believe the tone. I highly recommend this insanity!"

-- Craig Lunsford

"Holy smoke, I thought the amp was going to get up and walk around!! Very, very impressive complete tonal spectrum sound! Nice job."

-- Marcus Earling

"I A/B'd the Mercury version of the amp against a stock Valve Jr. head, and found it hard to stay plugged in to the non-modded version amp. I must say, the Mercury Upgrade might be a bit pricey, but it is truly worth it. For the cost of around $400, I have one of the best recording amps on the planet. Believe me, I have tons of vintage amps, old Marshalls, Fenders, Ampegs just to name a few and this little baby just kills! You could use it at a gig with it miked, and you'll be the envy of all your guitar player buddies. As for me, I can't stop playing it, very cool!"

-- Phil Antonucci