The iFi DC Blocker blocks incoming DC up to 1,200mV with a voltage rating from 90-240VAC and has a continuous current rating of 7A maxing at 10A so it is suitable even for larger power amplifiers without hampering dynamics. The DC Blocker is a device that we can place at the IEC (at the rear power inlet) and as its name implies, it stops DC from getting into the transformer therefore eliminates hum. This is caused by a small amount of DC voltage in the mains which makes its way through to the mains transformer which will become ‘saturated’ and start to hum. We can hear it when we place our ear close or next to the chassis. Many sound devices with toroidal transformers have a really annoying mechanical hum (emitted from the toroidal transformer itself). The original AC purifiers can still be used with the PowerStation in order to separate the digital and analogue devices for even less noise contamination. 30,000A 1,000V/10uS surge protection is also included to shut down, protecting downstream equipment from peril. The supplementary ground/earth connection will not introduce a ground loop even if the system is already earthed. ![]() The LED indicators show Polarity and Earth detection.Ī 4mm banana socket is added to the PowerStation so a grounding cable can be used to create a ground/earth when one isn’t present. No earth/ground can lead to annoying buzzes and hums. ![]() The PowerStation has inbuilt earth/ground and polarity detection.
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