Hall Research Stereo Audio Ground-Loop Isolator & Filter With 3.5Mm Connectors

Out of stock
Out of stock
  • Eliminates ground loop noise between the audio source and TV, or audio amp
  • Works with all notebook and desktop PC's and all portable devices with 3.5mm mini-stereo plug
  • Near perfect response of .03 db from 20 to 20,000 Hz
  • Perfect for AV presentations in classrooms or conference rooms
  • Compact and economical
Unit Price
US$ 32.40
Out of stock

It uses 1:1 audio transformers therefore it does not change the impedance. So if your load is 5K Ohm, adding the isolator in front of it, the source still sees a 5K Ohm load impedance.

A couple of important things to note:
The input side (the female 3.5mm at end of cable) has DC blocking capacitors, so it is a good idea to make sure to not reverse the input and output. Most audio sources should have these AC coupling caps on their outputs anyway (so their average output voltage is not biased at some DC voltage), but once in a while you have a source that has a DC output offset. If you connect the output with DC offset directly to the coils of the transformer a DC current will flow in the coil that may or may not affect the way the source behaves.

Everyone with a notebook should have one of these in their bag (along with an ), so the next time you do a presentation, you will have the purest sound along with sharp and trouble free video image.

  • Dimensions: 1.65 " x 1.25" x 1"
  • Material: ABS Plastic
  • Compliance: CE, FCC, RoHS
  • Freq Response: 20 to 20,000Hz
About Hall Research

Hall Research has been a leader in the design and manufacture of innovative Video over CATx, matrix switchers, scaling and automation products. As the creators of the device that revolutionized Video over Cat5, the Mini-Cat®, Hall Research has risen to prominence in the Audio/Video industry. Our products are used by every major industry in thousands of installations worldwide.

Shipping from
This product is shipped from our supplier's warehouse in Chanhassen, MN, United States
Our guarantee
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
Customers Who Bought This Item Also Bought
You recently viewed items