英國 iFi – DC Blocker+ 加強型電源噪音消除器


ZERO DC Block technology Blocks incoming DC – up to 1,200mV
Voltage rating 90 – 250 volts
Maximum current rating ≤14A
Max amplifier power​ 2200W or VA on 220V ~​
1100W or VA on 110V ~​
Continuous current rating​ 10A
Universal IEC Hospital-grade IEC connectors
Dimensions 75 x 46 x 32 mm / 3.0” x 1.8” x 1.3”
Weight 80 g (2.8 oz)

In stock


英國 iFi

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.

Additional information

iFi audio


IEC (Female)


IEC (Male)

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