Hi, I was wondering if it was possible to record a guitar head without micing the cab, by direct inputs...

I have a mesa boogie single rectifier 50 watt solo head.
See in this video the record directly and it sounds really good ;



Would dummy loads ( what is it ? lol ) be a part of the solution ?
The Behringer Ultra-G is a cab emulator and pads the signal for direct recording. However you still need a load, which can be the speaker cabinet. The Ultra-G just taps into the speaker signal.