Hi all, i have only been playing guitar for about 3 months but its not too much trouble since i've had piano for 5 years.

Actually i was wondering if someone could explain teh theory behind barre-chords. If i play an Amaj7 chord shape at the 8th fret what kind of chord have i jsut made? is it still an Amaj7 or another maj7 th chord or what?

Im sorry i dont know how else to phrase the question. If there is anything that isnt understood pls tell me.

Thank you :)