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GLI-3.5.MM Stereo Audio Ground-Loop Isolator and Filter 3.5mm by Hall Research

SKU: GLI-3.5.MM
GLI-3.5.MM Stereo Audio Ground-Loop Isolator and Filter 3.5mm by Hall Research

GLI-3.5.MM Stereo Audio Ground-Loop Isolator and Filter 3.5mm by Hall Research

  • $59.99
Qty:  
  • Brand
    Hall Research
  • SKU
    GLI-3.5.MM
  • Weight
    1.00 lbs
  • Warranty
    3 Years
  • Condition
    New
  • Status
    In Stock
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GLI-3.5mm Stereo Audio Ground-Loop Isolator & Filter with 3.5mm connectors. Eliminates ground loop noise between any audio source such as a notebook PC and audio equipment.
  • Brand
    Hall Research
  • SKU
    GLI-3.5.MM
  • Weight
    1.00 lbs
  • Warranty
    3 Years
  • Condition
    New
  • Status
    In Stock
Questions? Ask our experts!

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  • $59.99


GLI-3.5mm Stereo Audio Ground-Loop Isolator & Filter with 3.5mm connectors. Eliminates ground loop noise between any audio source such as a notebook PC and audio equipment. Perfect frequency response of  + .03 db from 20 to 20,000Hz. Uses proprietary audio transformers and filters for total elimination of any spurious buzz and hum in the audio.

Have you ever connected a PC or notebook to an audio amp or a TV and gotten all kinds of ugly noise- Most people would answer yes, and that's because the audio output from these devices are not balanced. Professional equipment have balanced audio which uses a + and a - signal for each L/R side and therefore does not rely on ground. Any noise in the ground between the source of the Audio signal and the amplifier is automatically ignored. On the other hand unbalanced signals, such as the one coming out of your notebook, have no reference other than building/AC ground. In fact you may have noticed that if you disconnect your notebook power supply and ran on batteries the noise has gone away. This is because, by doing so you inadvertently eliminated the ground loop. Line-level audio is a very tiny low-level signal, so any noise in AC ground, even as little as 0.004v, will be quite audible - yuck!

The GLI-3.5mm is simply inserted in series with the audio and it literally eliminates the ground connection between the two sides, passes all the audio while filtering out any noise using high performance audio transformers.

In most cases the unit can be used in either direction, however it is designed so that the Female 3.5mm mini-stereo connector is to be used as input and the male connector is the output. The input side incorporates DC blocking capacitors. Some audio source equipment may have a DC bias voltage on their audio signal. In order to isolate this Bias level from the transformer coils, DC blocking capacitors are employed in the GLI-35mm. Below is a picture of what is under the hood:

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

FEATURES

  • 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
  • Dimensions: 1.65 " x 1.25" x 1"
  • Material: ABS Plastic
  • Compliance: CE, FCC, RoHS
  • Freq Response: 20 to 20,000Hz
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Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.

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Major Credit Cards: Visa, MasterCard, Discover and American Express.
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Money orders: and personal checks or company checks (may take up to 10 days to clear).
Wire Transfer: ( Bank Transfer ) Only for the amount over $500. Contact us for the bank details.
Phone Orders: To place a phone order please call 1.888.902.3309 or 1.916.246.6264 and one of our Customer Service Representatives will take your order (8:00am - 6.00pm PST).

Purchase order: Fax purchase orders to 1.916.672.2557

We Offer A 30-Day Money Back Guarantee: 
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.

Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.

Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.

No Returns/Exchanges on the following:

TVs and monitors 20" and larger
Special Order merchandise
Any item indicated on the website as non-returnable

For more information see our official Return Policy


  • Shipping Info
    We offer free ground shipping on every purchase of $300 and more for US and US territory. We deliver worldwide.
  • Payment Methods

  • Return Policy
    We Offer a 30-Day Money Back Guarantee