What does a "Presence" control to the signal ?

[eh la bas ma]

oups...yes it is, i often get confused with them... i'm sorry, this won't happen again.

But I guess he looked sharper than Cary Grant, and surely he had a greater presence.

Be that as it may, "Man of the West" was released on screens in the late 50's, just like the presence control...

[Electron Tornado]

Here's a video that helps explain the presence control in an amp. Skip to 2:09: 

[GibsonGM]

oups...yes it is, i often get confused with them... i'm sorry, this won't happen again.

But I guess he looked sharper than Cary Grant, and surely he had a greater presence.

Be that as it may, "Man of the West" was released on screens in the late 50's, just like the presence control...

Yes    And he was also great in "Sergeant York".   But you just can't beat Cary Grant in "North By Northwest"!
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"Who is John Galt", Tornado?  "Why, you are, and I am, and"...1957, also in the era of the 1st great amps. 

I will stop going off-topic now. 

   

[duck_arse]

OT and fun-sucking:   Call me an old b@stard, but isn't the bottom pic Gary Cooper??   No offense, Justin

and now, even older.

[GibsonGM]

Perceived age:  Approx. 19 years.