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Rolls HE18 Two-Channel Audio Hum and Buzz Remover

Name: Rolls HE18 Two-Channel Audio Hum and Buzz Remover
Brand: Rolls
SKU: ROHE18
Price: 59.00 USD
Availability: InStock
Rating: 4.5 (36 reviews)

BH #ROHE18 • MFR #HE18 BUZZ OFF

36 reviews

Authorized Dealer

Rolls HE18 Two-Channel Audio Hum and Buzz Remover

Key Features

For Musicians and Audio Professionals
Helps Eliminate Ground Hum and Buzz
Dual Channel Operation
Inputs: 2 x 1/4" TRS, 2 x RCA, 3.5mm TRS

Perfect for musicians and audio professionals, the Rolls HE18 is a two-channel audio hum and buzz remover that virtually eliminates 60 Hz hum from a balanced or unbalanced line. The unit also converts unbalanced signals into balanced signals and vice versa, improving the overall noise performance of your audio system. Easy and convenient to use, the HE18 is completely passive and doesn't require power to operate.

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$59.00

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Rolls HE18 BUZZ OFF Overview

At a Glance

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

General

Compatibility	Not Specified by Manufacturer
Input / Output Connectors	2 x 1/4" TRS Inputs (Balanced/Unbalanced) 2 x RCA (L/R) Inputs 1 x 1/8" / 3.5 mm TRS Input 2 x 1/4" TRS Outputs (Balanced/Unbalanced) 2 x RCA (L/R) Outputs
Frequency Response (-0.5 dB)	20 Hz to 70 kHz
Distortion	< 0.005% THD @ 1 kHz
Crosstalk	> -97 dB
Input Impedance	1 kilohms (Max)
Minimum Load Impedance	10 Kilohms

Physical

Dimensions	4.15 x 2.46 x 1.55" / 10.54 x 6.25 x 3.94 cm
Weight	1 lb / 0.5 kg

Packaging Info

Package Weight	0.8 lb
Box Dimensions (LxWxH)	7.9 x 4.6 x 2"

Rolls HE18 BUZZ OFF Reviews

Perfect!

By Benjamin

Rated 5 out of 5

Date: 2023-11-17

This solved my issue perfectly. Sending my mixer to speakers created a buzzing and I couldn’t figure out why. Added this to the chain before running into the speakers and poof, gone! Thank you Rolls, and thank you B&H. I work not far from their store and chose the express pick up option. Did not have to wait on any lines, came in picked up my order and was on my way, very convenient.

Works as stated

By Jim

Rated 5 out of 5

Date: 2022-02-21

I have a small sound system for my computer. I wanted to add a television to this system with a small 2 channel mixer. I got a loud grounding hum. I tried many things to get rid of this like making sure all the devices were plugged into the same AC outlet, making sure every unit was grounded correctly, etc. No success. I purchased this unit because of the different inputs and outputs so that it would be versatile for other applications if I wanted to use it for another purpose in the future. It works great. No hum and great audio quality. And it stereo.

See any errors on this page?

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

Yes

Answered by: Raul M

Date published: 2021-10-01

question

Can this Rolls HE18 help reduces the hum noise for Audio Technica turntable with MC cartridge & 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

Vendor/installer inserted a device (magna?) to ...

Vendor/installer inserted a device (magna?) to route all components into a graphic equalizer, then out to speakers. That worked, but it introduced a faint flutter into the output. Even when all components, including the tuner/amp are powered down, if the 'magna' has power to it the flutter remains. The Rolls is said to eliminate flutter, not hum. Is that true? Is there a better device to use with the equalizer, designed for flutter as wells as hum? or just flutter?

Asked by: Kenneth

The Rolls HE18 will only remove buzz and hum.

Answered by: David M

Date published: 2022-01-27

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?

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 S

Date published: 2022-01-03

question

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