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Enhances the quality of AC electricity for your audio and AV systems.

If you have a mechanical hum, deploy the DC Blocker+

Sayonara mechanical hum.

Mains electricity, crucial to your audio systems, can often be disrupted by various interferences, distorting the AC waveform, and reducing audio quality. ‘DC on the mains’ is a common problem, particularly with amplifiers.

Although household outlets are intended to deliver pure AC power, a range of your home appliances—from lighting controls to home appliances power supplies—create ‘asymmetrical loads’, resulting in DC voltage on the AC supply.

When a small amount of DC voltage from the mains reaches the transformer, it can cause ‘saturation’, leading the transformer to produce a significant and persistent humming sound. You can hear it when you bring your ear close to or next to the chassis.

The DC Blocker+ is a smart device that, when you place it at the IEC (the rear power inlet), prevents DC from getting into the amplifier, thus eliminating transformer hum.

iFi audio DC Blocker+

Plus. Protect.

Enjoy music without the annoyance of unwanted hum.

  • Intelligently blocks over 1,000mV DC to eliminate transformer hum.
  • EMI shielding is retained.
  • Equipment safety is unaffected.

Plus for Higher Power Equipment.

The bigger the amplifier, usually, the larger the toroidal transformer — often sensitive to residual DC voltage. Simply add the DC Blocker+ at the IEC to stop DC from getting in.

  • Globally compatible (90-250V).
  • Designed for high-power equipment (Continuous current rating: 10A).
  • Compact design ensures it doesn’t obstruct other connectors, sockets, or cables.
Contents

CONTENTS:

1 x ZEN Stream

1 x Ethernet cable

1 x Plastic screwdriver

1 x Power adapter

1 x Antenna

1 x User manual

1 x Instruction card

ZERO DC Block technology – stops DC from getting into your amplifier and eliminates amplifier transformer hum.

Designed for high-power equipment (continuous current rating: 10A).

EMI shielding is retained.

High-performance glass passivated semiconductor.  High-case dielectric strength of 1500VRMS. UL listed.  Flame resistant IEC socket/connecter/chassis (Fireproof polymers UL94-V0).

Retailer

Apos Inc.

California
Distributor

iFi audio USA (West Coast)

California
Retailer

ListenUp

Colorado
Retailer

ListenUp

Colorado
Retailer

ListenUp

Colorado
Retailer

Music Direct

Illinois
Retailer

Gramophone

Maryland
Retailer

Gramophone

Maryland
Retailer

Gramophone

Maryland
Retailer

Gramophone

Maryland
Retailer

Gramophone

Maryland
Retailer

Audio Advisor

Michigan
Retailer

Bloom Audio

New Jersey
Retailer

High Definition Tape Transfers

New Jersey
Retailer

ListenUp

New Mexico
Retailer

Turntable Lab NY Storefront

New York
Retailer

Audio 46

New York
Retailer

Moon Audio

North Carolina
Retailer

AudioAdvice

North Carolina
Retailer

AudioAdvice

North Carolina
Retailer

Headphones.com

Oregon
Retailer

World Wide Stereo

Pennsylvania
Retailer

World Wide Stereo

Pennsylvania
Retailer

HIDEF Lifestyle

Pennsylvania
Distributor

iFi audio USA (East Coast)

Virginia
Retailer

USA-Audio Exchange

Virginia

This product is currently out of stock and unavailable.

ZERO DC Block technologyBlocks incoming DC – up to 1,200mV
Voltage rating90 – 250 volts
Maximum current rating≤14A
Max amplifier power​2200W or VA on 220V ~​
1100W or VA on 110V ~​
Continuous current rating​10A
Universal IECHospital-grade IEC connectors
Dimensions75 x 46 x 32 mm / 3.0” x 1.8” x 1.3”
Weight80 g (2.8 oz)

Disgustang Noise Begone! with iFi DC Blocker + Review

“With the DC Blocker +, all of the humming noise has nearly disappeared!”

GREQ Reviews

(Click name to read original review)