Send me your Marshall JMP or JCM 800 (JCM 800 reissues included), and I will modify your amp to sound just like Slash's infamous #34 amplifier. This amplifier (see photo above) was used to record the Guns N Roses "Use Your Illusion" albums; "The Spaghetti Incident"; all of the "Snake Pit" records and all of Slash's latest solo albums. I have modded several amplifiers for people, and they absolutely love the tone and feel of their amps. I've had this mod in my JCM 800 #34 replica now since 2011, and I absolutely love this mod! I wouldn't have it any other way.

Kudos to Frank Levi; the creator of the #34 mod!

Thank you, Frank!!!

Here are a few comments from recent customers...

"Jay,
   I am still really blown away by your modding skills!  I just wanted to let you know I'm still enjoying this amp and to say thank you again.

-Chris in Alabama"
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"Thanks Jay, this amp rocks, and I will never regret selling my AFD100 for this amp and mod!

-Greg in Florida"

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"Hi Jay,
              I've only had a chance to play it for like 20 minutes, but that's all I needed to know this amp is awesome. I love the tone; it's a growling beast..."

-James in Australia"

--Two weeks later...
"Hi Jay,
 
          I've finally got to spend a good few hours playing through my amp, and all I can say is this amp is AWESOME; from dirty to clean it sounds amazing. Without a doubt it nails Slash's UYI tone which I'm so stoked about. I've been trying to get that tone for years. I spent some time playing along with my CDs, and apart from my amateur skills the tone is dead on.
 
Mate, just like to say thank you for ALL and I mean All the time and work you put in so I could have this gem of a amp. I'm so appreciative for everything.
 
Many Thanks
 
-James in Australia"

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"OMG dude! I got a chance to crank it a bit last night with my '57 Gibson Goldtop reissue and it absolutely nails the UYI tone to a tee!

I was like a kid at Xmas!!! Soooooooo stoked! I can't praise your job enough, Jay!!!!!!!!

You rock man!

Thanks so much!!!!!!

More to come this weekend. UYI tone to a tee!!!!
 
-Johnny in Nevada City, CA"
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If you're a Slash fan you'll love this mod. Send me your JMP or JCM 800 (reissues as well) for the infamous #34 mod. You won't be sorry. (-:

Hear for yourself....

YouTube Demo Videos:

My JCM 800 #34 tone demo:
https://youtu.be/SHqxAOx4U5c

Chris from Alabama demo video:
https://youtu.be/m1XOPifzNWI

Other amplifier services available upon request (prices include parts):
Complete Filter Cap Replacement for 100 watt model (F&T brand): 6 - 50uF/50uF 500V, 2 - 10uF caps: $140
Complete Filter Cap Replacement for 50 watt model (F&T brand): 3 - 50uF/50uF 500V, 2 - 10uF caps: $120
Install 1ohm resistors on power tube sockets and bias amp (50 & 100 watt models): $25
PPIMV (Post/Phase/Inverter/Master/Volume) Never need a power soak again: $50
Effects Loop Install: $120

(Prices are non-negotiable)

Thank you for looking at my listing!!!!!