Universal Audio OX Amp Top Box Reactive LoadboxUnlock Legendary Tube Amp Tones at Any Volume Introducing the Universal Audio OX Amp Top Box, the premier reactive load box and guitar recording system. This innovative device lets you capture perfectly studio miked amp sounds from your favorite tube amp, no matter the volume. Play and record your amp in its sweet spots, from pristine clean tones to fully cranked overdrive, with authentic mic, room, and speaker cabinet emulations, all at the turn of a