New! Video Chat Connect with a Pro Audio Expert – Live

Rolls HE18 Buzz Off 2-Channel Hum and Buzz Remover

Rolls HE18 Buzz Off 2-Channel Hum and Buzz Remover
In Stock
Protect your Gear
Add a protection plan from $5.99

True Know-How

Ask Our Experts


Rolls HE18 BUZZ OFF Overview

The Rolls HE18 Buzz Off is a low-cost, 2-channel, inline 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
UPC: 675889000184

Rolls HE18 BUZZ OFF Specs

FunctionHum and Buzz Remover
Bi-Directional Line Convertor
Inputs2 x 1/4" TRS Phone, Balanced
2 x RCA Phono, Unbalanced
Outputs2 x 1/4" TRS Phone, Balanced
2 x RCA Phono, Unbalanced
Frequency Response20 Hz -70 kHz +/- .5dB
Distortion<0.05% THD at 1 kHz
Crosstalk> -97 dB
Dimensions2.5 x 4.1 x 1.5" (63.5 x 104.1 x 38.1mm)
Weight1 lb / 450 g
Packaging Info
Package Weight0.7 lb
Box Dimensions (LxWxH)7.9 x 4.6 x 2"
See any errors on this page? Let us know


Will this take the left and right trs input and ...

Will this take the left and right trs input and convert it to rca left and right output?
Asked by: Joseph
Answered by: Raul M
Date published: 2021-10-01


Can this Rolls HE18 help reduces the hum noise for Audio Technica turntable with MC cartridge &amp; Nakamichi control amp ?
Asked by: Anonymous
I have run into this problem in the past on multiple occasions. Check all wiring and cable connections inside the turntable (requires turntable disassembly in many cases to access internal connections) and clean all of those connections with a quality product for that purpose. This problem is usually caused by galvanization between dissimilar metals used on the mating connectors. Your best bet here is to have gold plating on both mating connector. Check and clean both cable ends as well.
Answered by: jim w.
Date published: 2018-08-27

Will it work for 120hz signals? I have a buzz ...

Will it work for 120hz signals? I have a buzz from my turntable and I have tried almost everything and I'm still getting a buzz
Asked by: Trevor
This style of buzz eliminator is designed for 50 to 60hz.
Answered by: Daniel
Date published: 2020-07-01

Is this good for car subwoofer hum?

Is this good for car subwoofer hum?
Asked by: Tim
If the cause of the hum is created by a ground loop, then the Rolls HE18 Buzz Off may help to resolve the problem.
Answered by: Lisa
Date published: 2022-01-03


can it be used for 50 Hz signals?
Asked by: Anonymous
The BUZZ OFF will block 50 Hz hum and the buzz produced by the line noise harmonics from AC Mains powered audio systems. Use short output cables from the HE15 the destination of the audio signal. This seems to help cut down the common mode noise on the long cable segment. This is a great box to have whenever connecting a laptop pc to a public address system to cut out unwanted noise. It works to eliminate noise that is sometimes present when presenters laptop is connected with video to projector and audio to amplifiers.
Answered by: SAMUEL M.
Date published: 2018-08-27
  • y_2022, m_1, d_17, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_US, sid_380761, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo