CaptainCrunch
New member
Where do these mods get done now. Just grabbed one off e-bay. Sounds heavy, super saturated just noisy. Was thinking of getting the noise mod.
baron55":324pfcu5 said:I always wondered about the 3TM and why they went that direction. The Stock ADA as 4 gain stages plus a OPAMP gain stage in the front in of the amp. So basically 5 gain stages. With he 3TM you even have more.
The ADA's can be made to sound very heavy with he current setup with a few simple mods. But the biggest issue with them is you only get about 250 volts to the preamp tubes. This is great for the Marshall style tones but for more modern high gain, you need more voltage headroom for more clarity. Something more in the 330 to 360 volt range. Diezels run 400v on the preamps in some of their amps!
The noise mod most likely won't help. actually stock ADA units are very quiet. Now before killing me about that Most people experienced hum and noise with ADA units because they were having ground loop issues with them and didn't know it.
I had a Stock ADA on the bench a few months back and it was made in 1987! And it was dead quiet. The noise mod just replaces the filter caps, which for a unit that old, is a good idea anyway.
The ADA depot site crashed and a guy who was the moderator (MarshallJMP) has it now trying to restore it. He has a website http://www.marshalljmpmodshop.net/
He does mods etc. But he is in Europe.
http://www.marshalljmpmodshop.net/mp1 3tm ultra.htmCaptainCrunch":dd177ozj said:What's the Ultra+ mod give? So are there more gain mods more than the 3TM?
CaptainCrunch":3e0kzkas said:I am chasing the old Metallica Justice on Wheels saturated crunch. I couldn't get it out of the MP-1's. Had the MP-2 but was extremely noisy. Found this 3tm on ebay.