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Rolls HE18 - Buzz Off 2-Channel Hum and Buzz Remover

B&H # ROHE18 Mfr # HE18 BUZZ OFF
In Stock
Free Shipping for This Item Free Expedited Shipping on Orders over $49
You Pay: $42.50

The Rolls HE18 Buzz Off is a low-cost, 2-channel, in-line audio hum and buzz remover, which virtually eliminates 60 cycle ground hum and buzz in the audio path. In addition to hum removal, the unit converts unbalanced signals into balanced signals, and vice-versa, improving overall noise performance.

Eliminates ground loop hum and buzz
Leaves signal grounds connected
Passive unit, no power required
Converts balanced lines to unbalanced lines and vice-versa
Adjusts signal voltages to match difference in ground potential
Function Hum and Buzz Remover
Bi-Directional Line Convertor
Inputs 2 x 1/4" TRS Phone, Balanced
2 x RCA Phono, Unbalanced
Outputs 2 x 1/4" TRS Phone, Balanced
2 x RCA Phono, Unbalanced
Frequency Response 20 Hz -70 kHz +/- .5dB
Distortion < 0.05% THD @ 1 khz
Crosstalk > -97 dB
Dimensions (WxDxH) 2.5 x 4.1 x 1.5" (63.5 x 104.1 x 38.1mm)
Weight 1 lb (.45 kg)
Specialties Hum and Buzz Remover
Bi-directional Line Convertor
Rolls HE18 - Buzz Off 2-Channel Hum and Buzz Remover
  • 1 Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    RollsHE18 - Buzz Off
     
    4.8

    (based on 5 reviews)

    Ratings Distribution

    • 5 Stars

       

      (4)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Compact (4)
    • Easy to use (4)
    • Good audio (4)

    Cons

      Best Uses

      • Home studio (4)
      • Amateur recording (3)
        • Reviewer Profile:
        • Experienced (4)

      Reviewed by 5 customers

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      Displaying reviews 1-5

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      5.0

      Works Great!

      By CCMI

      from CT

      Comments about Rolls HE18 - Buzz Off:

      Does exactly what it says it does. Plug in and the problem is gone. Worth twice the price.

      Share this review

       
      5.0

      Works perfect

      By Rudy

      from Edmonton, Alberta

      About Me Experienced

      Verified Buyer

      Pros

      • Clear Sound
      • Compact
      • Easy To Use
      • Lightweight

      Cons

        Best Uses

        • Home Studio

        Comments about Rolls HE18 - Buzz Off:

        I used these to remove an annoying ground loop hum in a McIntosh Home Theatre system. After 3 years of shipping, repairs and purchasing multiple types of cables, and after sending the unit in for repair twice, the manufacturer was unable to repair the unit. I stumbled onto the Buzz Off by accident. I installed them and there was dead silence...perfect. Wish i had found these earlier...would have saved me $1200.00 in shipping and repair costs.

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        4.0

        Well Built For Price

        By Mosfet20

        from New York

        About Me Experienced

        Verified Buyer

        Pros

        • Clear Sound
        • Compact
        • Easy To Use

        Cons

        • Limited Functions

        Best Uses

        • Amateur Recording
        • Home Studio

        Comments about Rolls HE18 - Buzz Off:

        Used it to eliminate ground hum for home recording. Did the trick, cheap and well built. No power required is a nice touch

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        5.0

        Works Perfectly

        By Lance Campeau

        from Montreal, Canada

        About Me Experienced

        Verified Buyer

        Pros

        • Clear Sound
        • Compact
        • Durable
        • Easy To Use
        • Passive Electronics
        • Versatile

        Cons

          Best Uses

          • Amateur Recording
          • Events
          • Home Studio
          • Mobile DJ
          • Performances

          Comments about Rolls HE18 - Buzz Off:

          I needed a solution for removing ground loop noise in my studio. I needed to connect my Yamaha 01v mixer to my PC using the onboard line jack (-10db). When I plugged the mixer into the computer using the RCA outs from the board it caused a terrible ground loop and noise from the mains was sitting around -35db. When I added the Rolls HE18, the noise floor now sits at about -67db. A 32db reduction in noise and very tolerable for both demo recordings and online audio streaming. It also does unbalanced to balanced audio conversion, has 1/8", 1/4" and RCA jacks (1/8" is input only). Heavy duty build and feel. The passive electronic design saves the headache of having to accommodate yet another wall adapter.If you have a ground loop in your project studio. Buy this box. It works.

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          5.0

          Easy to install - problem resolved

          By Music Enthusiast

          from Georgetown, TX

          About Me Experienced

          Verified Buyer

          Pros

          • Clear Sound
          • Compact
          • Durable
          • Easy To Use
          • Lightweight
          • Versatile

          Cons

            Best Uses

            • Amateur Recording
            • Computer Audio
            • Home Studio
            • Professional Recording

            Comments about Rolls HE18 - Buzz Off:

            I play all of my music CD's and MP3's on my desktop computer routing the line out signal from my sound card into a stereo system that has speakers in various locations in my home. There was always a low level hum while the computer was powered on when playing music, not too bad but not desirable. When the computer was powered off the hum would get much louder and the stereo system would need to be powered down or switched to a different input such as FM or phono to eliminate the noise.

            I tried several filters and even ground isolation circuits, no help. I determined the problem source was common mode noise, a difference between ground potentials of the two systems.

            I purchased the HE18 because of the size and superior audio specifications. Very easy to install giving me options for several different connector types, I used the RCA style connectors.

            Excellent results. Problem eliminated. I do not detect any frequency or volume loss.

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