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Enhance the quality of AC electricity for your audio and AV systems.
If you have a mechanical hum, deploy the DC Blocker+![1693501088653.png 1693501088653.png](https://cdn.head-fi.org/a/12153189.png)
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.
![1693501159372.png 1693501159372.png](https://cdn.head-fi.org/a/12153190.png)
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.
![1693501210627.png 1693501210627.png](https://cdn.head-fi.org/a/12153191.png)
![](https://ifi-audio.com/wp-content/uploads/2021/03/iFi_DC-Blocker_ZERO-DC-Block_icon-300x300.png)
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).
![](https://ifi-audio.com/wp-content/uploads/2021/03/iFi_GND-Defender_EMI-Shielding_icon-300x225.png)
EMI shielding is retained.
![](https://ifi-audio.com/wp-content/uploads/2021/03/iFi_DC-Blocker_Hospital-grade-IEC_icon-300x200.png)
High-performance glass passivated semiconductor. High-case dielectric strength of 1500VRMS. UL listed. Flame resistant IEC socket/connecter/chassis (Fireproof polymers UL94-V0).
Here's a comparison of the DC Blocker!
![1693501293612.png 1693501293612.png](https://cdn.head-fi.org/a/12153193.png)
Get Yours!
Cheers!!
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