Pro 2Channels RCA Noise Filter Hum Eliminator Ground Loop Isolator (No Affect Bass) for HiFi Stereo Home Theater Car Audio Player (Silver-Gray (2CH HiFi Stereo RCA))

This little RCA Noise Filter Hum Eliminator worked perfectly the very first time it was connected! I have a 12-seat home theater with a front & rear powered subwoofer pair. The rear sub (Earthquake Sound CP-8 Couch Potato) had a huge ground-loop hum, but once I added this RCA Noise Filter it was gone. I have to admit I was skeptical that it would even do anything, especially since the rear sub has 35 ft of RG-6 Quad-Shield coax ahead of it, but I love it when I'm wrong. Oh, and the BASS still works fine.

I had a bad hum that I couldn’t track down, so I ordered this. While in transit, I reconnected the pins on the cartridge (that I had just replaced) and that eliminated the hum. When this arrived, I plugged it in just for an added layer of protection and the hum had returned. Removing this component removed the hum. YMMV. You have been warned.

I used this filter between my VPI Scoutmaster and my Ming Da Phone Pre. Wow! Exceeded my expectations. I had some hum without it but can now push the volume up while the filter pushes the noise floor down. Bass is still voluptuous and full. I played a track I’m very familiar with and without and didn’t detect any major drawbacks. If I were to offer one small suggestion, make the same filter with a version with both RCA Female In and RCA Female Out (No wired to or from). That would allow the user to control the quality of interconnects in and out of the filter. Overall score ☀️☀️☀️☀️☀️for performance to price ratio.

I was skeptical at first since there wasn't many reviews for this thing but it works well.I had a ground loop issue with my two four channel amps from splitting two RCA outputs to four. Plugged these bad boys in and VOILA! No more ground loop noise. Well worth the money if you are having ground loop issues. No loss in signal at all great product

Was very surprised how well it worked. I can a ground loop noise that was veryyy loud when starting the car and this got rid of it completely. Only complaint is it seems expensive for the quality and feel of it but it seems to work great otherwise.

I can't believe, this was plug and play, noise, humming sound gone !!

I purchased this to cut out the noise coming from a subwoofer because of a ground loop fault. It completely stopped all humming and static, but it also kept the subwoofer from working. Maybe I'm doing something wrong? If anyone has suggestions, I'd be interested in hearing them.

So we had a unit come in. Polaris ranger 1000. Dirty power. Almost a growling noise coming from the engine. We installed two positive noise filters on this unit. A new radio and amp. The growling noise became a crackle. so. On a guess, I ordered this. and iot smoothed out the noise. Didn't effect the quality or anything else. Installed the part, we will see how it works over time.