I tried one on their 30 day home trial basis, but it didn't completely remove the transformer hum I was getting with some monoblock amps, so I returned it. Since it is a money back proposition, you only risk shipping costs to try it.
FYI, DC definitely can ride on the AC line. It saturates the transformers and makes some hum pretty badly at times. My power has had this issue all along, so I have had to select gear that doesn't resonate with this problem. I am guessing that my situation might be on the more extreme side.
I researched and found plenty of folks that found the Humdinger to be useful, so I'd say give it a whirl.
FYI, DC definitely can ride on the AC line. It saturates the transformers and makes some hum pretty badly at times. My power has had this issue all along, so I have had to select gear that doesn't resonate with this problem. I am guessing that my situation might be on the more extreme side.
I researched and found plenty of folks that found the Humdinger to be useful, so I'd say give it a whirl.