{"id":11532,"date":"2025-04-15T17:12:50","date_gmt":"2025-04-15T15:12:50","guid":{"rendered":"https:\/\/murerstore.com\/prodotto\/ifi-dc-blocker\/"},"modified":"2025-04-15T17:17:19","modified_gmt":"2025-04-15T15:17:19","slug":"ifi-dc-blocker","status":"publish","type":"product","link":"https:\/\/murerstore.com\/en\/product\/ifi-dc-blocker\/","title":{"rendered":"iFi DC Blocker"},"content":{"rendered":"

iFi DC Blocker \u2013 Eliminate Transformer Hum<\/strong><\/h1>\n

The iFi DC Blocker<\/strong> resolves the hum issue in audio systems.<\/p>\n

The iFi DC Blocker from the SilentPower line, produced by the British manufacturer, is an intelligent device placed at the IEC power input (the rear power socket). It prevents DC current from entering the amplifier, effectively eliminating the annoying transformer hum. With the DC Blocker, you can finally enjoy an interference-free listening experience, fully immersing yourself in the music.<\/p>\n

The Role of Household Power in Audio Systems<\/strong><\/p>\n

Household electricity, a crucial element for audio systems, is often subject to various kinds of interference that distort the AC waveform, compromising sound quality. One of the most common issues, especially with amplifiers, is the presence of DC current<\/strong> on the power grid.<\/p>\n

Although household sockets should provide pure alternating current (AC)<\/strong>, a variety of appliances\u2014such as lighting controls and power supplies for household devices\u2014can create asymmetric loads, leading to DC voltage appearing on the AC network.<\/p>\n

iFi DC Blocker in Action<\/strong><\/p>\n

When a small amount of DC voltage reaches the amplifier\u2019s transformer, it can cause saturation<\/strong>, generating a significant and persistent hum. This hum is easily perceptible when placing your ear near the amplifier’s chassis, particularly in high-power amplifiers equipped with large toroidal transformers<\/strong>, such as those from Hegel<\/strong>.<\/p>\n

This is where the iFi DC Blocker<\/strong> comes in.<\/p>\n

The DC Blocker<\/strong>\u00a0is a smart device designed to eliminate transformer hum<\/strong> in power amplifiers. Positioned at the IEC power input<\/strong>, it intercepts and neutralizes DC voltage<\/strong> before it reaches the amplifier, protecting it from potential damage.<\/p>\n

Thanks to ZERO DC Block technology<\/strong>, the device fully blocks DC interference, ensuring a disturbance-free listening experience. Designed to handle high-power equipment (nominal continuous current: 10A)<\/strong>, the DC Blocker is compatible with a wide range of amplifiers, including those equipped with large toroidal transformers<\/strong> that are particularly sensitive to DC voltage.<\/p>\n

Key Features of the iFi DC Blocker:<\/strong><\/p>\n