i was just reading through some of the old threads on heads and stuff and alot of you guys keep mentioning getting mods and stuff like the bias mod, noise mod ect. what are they and what do they do exactly?

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a noise mod is usually just a mod where parts are replaced or added to make a unit less noisey, likae a cranked up amp with the gain up high has that always present hiss..... a bias mod is a mod to run, say, your powertubes warmer or colder to your preference.....
in the ada they have the 3tm mod which adds a 3rd tube for more gain and all around warmer tone..
ect... "mod" is just short for modifiaction.

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Im just curious..
How did you manage to get 1500+ posts and not know what mods are?

i know mods ment modifications i just didnt know what the mods did, i dont spend my time studying gear, just playing through them

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Oh ok, well mods can help your tone alot.
Does anyone know a good place to learn how to mod?

Study electronics.

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there are more parts to metaltabs.com than the gear forum...

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true, but i go on different sections of metaltabs and i know what mods are already. But he probably goes on the other sections alot.