Speaker Line 3.5mm Aux Audio Noise Filter Ground Loop Noise Isolator Eliminate for Car Stereo Audio
Aliexpress UK
Model: M101. Its input and output are a pair of RCA socket plugs. (4) Also suitable for car audio with golden plated RCA jacks.
eBay
WvvMvv Speaker Line 3.5mm Aux Audio Noise Filter Ground Loop Noise Isolator Eliminate for Car Stereo
Aliexpress UK
1 Piece of Car Audio Noise Suppressor. The elimination of HID lamp ballast electromagnetic interference. Eliminate the car sound of the current noise. Material: ABS plastic+Electric Parts. Blue: Positive output.
eBay
VAROLO 3.5mm AUX Audio Anti-interference Noise Filter For Speaker Phone Stereo Audio System Ground
Aliexpress UK
The ground loop isolator is portable, light-weight. Plug and play without any complicated setup. Noise isolator size: 60mm x 20 mm x 17mm. 2 Channel High level ISO Rear Channel Amplifiers to Low Level Audio Convertor.
eBay
eppfun AV100C RCA audio isolator common ground noise filter 3.5mm anti-interference noise canceller
Aliexpress UK
VIBE Presents the Critical Link Ground Loop IsolatorA low level filter to isolate the ground between the car stereo and amplifier, to prevent car ignition noise and earth-loop hums. Condition & Warranty.
eBay
Audio LP Vinyl Record Turntable Metal Record Stabilizer Reduces Background Noise Record Player
Aliexpress UK
Eliminates humming and buzzing due to ground loop issues. Eliminate ground loop humming and buzzing noise between an audio source and an amplifier. When used with car audio, this isolation circuit goes between the head unit and the amp or EQ.
eBay
LHY Audio 25W Dc12v Low Noise DC Stabilized Linear Power Supply Upgrade HiFi Audio Audio Routing
Aliexpress UK
Small and portable, this noise isolator doesn't take up much space and it's easy to take away. Because the grounding points of the two devices are different, it is possible to generate common ground noise.
eBay
HiFi Audio Isolator Acoustic Noise Isolation Sound Filter Noise Reduction Acoustic Audio Stereo
Aliexpress UK
The grounding box can improve the sound quality, but it cannot replace the grounding wire. The grounding box is a passive product and can be used without a power connection. 1 Grounding box（Large）. Simple design: The wooden shell is clean and simple and easy to use.
eBay
Fosi Audio DC Power Filter Eliminates High-Frequency Noise With V3 MONO
Aliexpress UK
Audio interface: 3.5mm. Colour: Black. Audio input: Stereo. Easy to install, and play. Installation location: car audio. Due to factors such as monitor brightness and light brightness, the actual color of the item may be slightly different from the image displayed on the website.
eBay