I use either the line out from the amp?or drop a Shure 57 in front of the grill, swinging from the handle.? Sometimes I do both, but they both sound nearly the same.? Works fine. For recording, I use two 57's.? One in front of the grill, the other on a stand, about ten feet from the amp. Then I "mix" the two mics for the best sound, it's fun!? It gets a deep sound and tone.