Open shape
x02120
Amaj7 is the A major 7 chord. Its notes are A, C♯, E and G♯. An open, reflective color. The major seventh sits a semitone below the root.
x02120
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Numbers show frets from the low E string to the high e string; x means don't play that string.
Amaj7 is the Imaj7 chord in A major and the IVmaj7 chord in E major. That makes it a natural fit in songs written in those keys.
Every A, C♯, E and G♯ on the first 12 frets. The filled dots are the root, A. Build your own shape from any nearby group.
Other A chords
Other major 7 chords