SKU: 18932713581

Kopul HMX-2 Humbuster - Dual-Channel Hum Eliminator with XLR and 1/4" Connectors

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Description

Kopul HMX-2 Humbuster - Dual-Channel Hum Eliminator with XLR and 1/4" ConnectorsEliminates 60 Hz Ground Loops Silences Unbalanced Cable Buzz and Hum Can Be Used as DI Box Preserves Signal Integrity Converts Balanced and Unbalanced Signals Works with 1 4" and XLR Connectors +4 dBu or 10 dBv Fully Passive Design No External Power Required Rugged Metal Enclosure Designed for studio, DJ, and live sound applications, the Kopul HMX 2 Humbuster is a dual channel hum eliminator with both XLR and 1 4" (6. 35mm) TRS TS input and output

  • Eliminates 60 Hz Ground Loops
  • Silences Unbalanced Cable Buzz and Hum
  • Can Be Used as DI Box
  • Preserves Signal Integrity
  • Converts Balanced and Unbalanced Signals
  • Works with 1/4" and XLR Connectors
  • +4 dBu or -10 dBv
  • Fully Passive Design
  • No External Power Required
  • Rugged Metal Enclosure

Designed for studio, DJ, and live sound applications, the Kopul HMX-2 Humbuster is a dual-channel hum eliminator with both XLR and 1/4" (6.35mm) TRS/TS input and output connectors. Using a fully passive design, without the need for external power, the device can eliminate unwanted 60 Hz hum and buzz caused by ground loops in your signal path.

Housed in a road-worthy rugged metal enclosure, the device can be inserted between any two pieces of line-level equipment at +4 dBu or -10 dBv to quiet hum and buzz caused by excessively long unbalanced cable runs, or when a connection path forms between the grounds of two pieces of equipment in the signal chain. Ground loops are removed while preserving the integrity of the original signal.

The device will automatically convert between balanced and unbalanced signals (and vice versa) when the 1/4" (6.35mm) TRS/TS and XLR connectors are used in any combination. This also allows the Humbuster to be used as a direct box for connecting the unbalanced output signal of a musical instrument directly to the balanced input of a mixing console. The design utilizes high-quality internal components and gold-plated XLR connectors to reduce noise and maintain the fidelity of your signal.

Eliminates Hum
Removes unwanted 60 cycle hum and buzz caused by ground loops
Quiets Cable Noise
Reduces interference and noise caused by excessively long unbalanced cable runs
Preserves Signal Integrity
Removes hum and buzz without compromising signal quality
Balanced to Unbalanced Conversion (and Vice Versa)
Allows you to automatically convert between balanced and unbalanced signals
Direct Box
Allows you to directly connect the unbalanced output of a musical instrument to the balanced input of a mixing console
Compatibility
Supports balanced XLR, balanced 1/4" (6.35mm) TRS, and unbalanced 1/4" (6.35mm) TS input and output connectors
UPC: 847628587311
Inputs 2x 1/4" (6.35 mm) TRS/TS
2x XLR-3F
Outputs 2x 1/4" (6.35 mm) TRS/TS
2x XLR-3M
Frequency Response 20 to 70,000 Hz
Distortion < 0.005 THD at 1 kHz
Crosstalk > -97 dB
Source Impedance Max: 1 kOhm
Min: 10 kOhms
Dimensions (H x W x D) 1.4 x 4.5 x 3.25" (3.5 x 11.4 x 8.3 cm)
Weight 15.2 oz (431 g)
Packaging Info
Package Weight 1.35 lb
Box Dimensions (LxWxH) 8.5 x 6.5 x 2.4"
In the Box
Kopul HMX-2 Humbuster - Dual-Channel Hum Eliminator with XLR and 1/4" Connectors
  • Limited 2-Year Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18932713581

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MC
Natrona Heights, US
★★★★★ 5
Correctly targeted by Amazon's suggestion
I didn't know my dogs were crackheads until they tried this. They absolutely loved them. Even my 16 year old RUNS to get them. Definitely 5+ stars.
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Reviewed in the United States on June 8, 2026
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IrishGaoth
Bozeman, US
★★★★★ 5
TheBizg
The dog'o is happy
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Reviewed in the United States on June 1, 2026
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Eclectic Amalgam
Whiting, US
★★★★★ 4
Tasty treat but better as a quick reward than a long chew
I gave these to my German Shepherd and Lab as occasional treats. They were immediately interested and finished them quickly, which usually means they’re both appealing and easy to eat. These aren’t long-lasting chews—they’re more of a quick snack. For larger dogs especially, they won’t keep them occupied for very long. Compared to tougher chew options, these are better suited for training rewards or short treat sessions. I’d rate them 4 stars. Good flavor appeal, but not designed for extended chewing. Tip: Use them as a reward treat rather than something to keep your dog busy.
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Reviewed in the United States on April 5, 2026
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Shawna
Birmingham, US
★★★★★ 5
Low fat treats
My dog loves these. Keeps begging for more. Will definitely repurchase
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Reviewed in the United States on April 12, 2026
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tjutter2
West Palm Beach, US
★★★★★ 5
Chicken and Peanut Butter - Two Great Tastes That Taste Great Together... to my Dog
My dog is a fairly selective eater, but she loves chicken jerky and peanut butter, so I thought I'd give these a try. She took to them right away, and can finish one off in about 3 minutes. They have a distinct smell of peanut butter (despite peanut butter only being 3% of the composition). Each chicken jerky-wrapped peanut butter biscuit is about 4.5" long, and they arrive packaged in a resealable bag. Made in China; my bag was printed with a 'BEST BEFORE' date over a year from the date I received them. Note that these treats have been irradiated to kill harmful bacteria and parasites.
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Reviewed in the United States on April 19, 2026

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