Since my BV150H is a 150 watt tube amp it's absolutely unusable in my home and small venues. For such locations this attenuator is indeed a life saver. Due to the ridiculously high wattage of my amp I use two such attenuators with two parallel outputs of my amp. Then I set my cab to operate in stereo mode and then I connect the outputs from the two attenuators into the stereo inputs of my cab.
It adds minimal coloration to my amps tone. Compared to many other reactive attenuators it costs pretty low too. Of course it doesn't have stuffs like IR loader and other bells and whistles but then again I never felt the need of such stuffs. I prefer to record my amps in the good ole way, i.e., with microphones.
200 watt MASS with a moving voice coil speaker motor for the load. This unit is impedanced swamped to protect the output of your tube amp, and may be used with 4, 8, and 16 ohm amps. Includes adjustable Line Out, System Bypass, and Variable Treble Compensation. Volume level is continuously variable to over 50db of attenuation.