This 8 ohm load box does more than just attenuate your guitar signal. It also allows for a mic'd input to be phase aligned along with the amp's DI. This feature creates massive guitar tones as it is a variable phase control. By varying the degree of phase one can dramatically expand the size of the stereo imaging.
The unit does not come with a power on/off switch so I purchased the wings and mounted it in an SKB case and installed a power switch on the front panel.
Totally professional install, works perfectly, never gigged, as new condition.