The Deluxe Reverb has no line output, and so if you want to hear the amp coming through your monitor or through the main PA system, you'll need to mic it up. Now, live playing and recording are two very different beasts, and you'll very likely mic the amp up in different ways for each situation. For either case, the go-to mic is the Shure SM57, as this mic, in our humble opinion, will give you the best reproduction of the amp's tone. For live situations, you'll just need one placed between the speaker cone and the outer rim of the speaker for an even sound. For recording, there is more room for experimentation, and you should place another mic behind the amp to get a fuller sound, plus another "room" microphone if you are recording in a great-sounding room. This is a situation where you'll want to experiment a bit, but you'll get the best sound from having at least two mics on your amp