Solving the Annoying Mechanical Hum Many large amplifiers suffer from an irritating mechanical hum, typically emitted from their toroidal transformers. This audible hum becomes apparent when you place your ear in close proximity to the amplifier's chassis. The root cause of this inconvenience is the presence of a small amount of direct current (DC) voltage in the mains power supply. This DC voltage finds its way into the mains transformer, causing it to become "saturated" and generate the audible hum that can be quite bothersome.
The Solution: iFi Audio DC Blocker The iFi Audio DC Blocker is a clever and effective device designed to address this issue. It is placed at the IEC (rear power inlet) of the amplifier, where it serves its purpose precisely as its name suggests—it blocks DC voltage from entering the amplifier. By doing so, it eliminates the transformer hum that can otherwise detract from the audio experience.
In essence, the DC Blocker acts as a gatekeeper, preventing any unwanted DC voltage from contaminating the mains transformer of the amplifier. This simple yet ingenious solution ensures that your amplifier operates silently, free from the mechanical hum caused by DC interference.
Delivery is made by common carrier next working day. Delivery is FREE for orders in-stock and over £100 or £9.99 for orders less than £100 or special delivery items.
Statutory Cancellation Right
You have the statutory right to cancel your order for any reason within 14 days beginning with the day you receive the item (please see clause 2 of our Conditions of Sale for the full instructions on cancellation and further information on your right of cancellation). We only accept cancellations via phone - 0115 975 8613, email - sales@superfi.co.uk or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.
Our Voluntary Returns Policy
As well as your statutory cancellation rights described above, you can return most products within 30 days of receipt of the products if the products are complete and are in an unused and undamaged condition. We only accept returns via phone - 0115 975 8613 or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.
Please note that this returns policy doesn't affect your statutory rights and therefore doesn't affect your right of cancellation as described above.
Please note that you must return each item in the same condition in which you received it. This means that new items must be returned new, unused and complete (including all accessories). Refunds for returned items that are not received in this condition, may be reduced.
