Name: iFi DC Blocker | Noise Reducer
SKU: 767926

Product Details ＋

Enhance the Quality of AC Electricity and Eradicate Mechanical Hum in Your Audio and AV Systems with iFi's DC Blocker

Intelligently blocks >1,000mV DC to eliminate transformer hum
Safely retains EMI shielding
Does not affect the safety of the equipment
Can be used around the globe

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), it prevents DC from getting into the amplifier, thus eliminating transformer hum.

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

Typically, the bigger the amplifier, the larger the toroidal transformer which is often sensitive to residual DC voltage. Simply add the DC Blocker at the IEC to stop DC from getting in.