Is the UA Ox Box a good attenuator? Ox Amp Top Box vs. Tone King Iron Man

If you are a guitarist who enjoys using a Tube Amp at home, it won't be long before you start looking for an attenuator! Allowing you to enjoy full tones at a reasonable volume, attenuators are incredibly useful. I want to see how good the UA Ox Box is an attenuator, and compare it to the iron man inside my tone king sky king.