Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not eliminate ground Loop Hum

While the product arrived quickly, it did not work properly. I say this confidently because I ordered a "Boss Audio Systems Car Ground Loop Isolator (B25N)" from Amazon it worked just fine. They look similar and there really is only one way to hook it up.The Scosche product did NOT reduce the ground loop hum. It DID attenuate the bass though, which is a bad thing.Do not purchase this product. Consider the BOSS product I mentioned above, also available on Amazon prime.