Plug the iFi DC Blocker+ into Your High-Current Amplifier and Eliminate Hum: Simple, Inexpensive Device Works Immediately Bothered by mechanical hum from your amplifier? Kill it with the iFi DCBlocker+, which plugs right into the IEC of your amp and prevents DC from getting inside.

Easy, simple, effective — and the end of unwanted transformer noise. Rated at 10A, DCBlocker+ blocks more than 1000mV DC, retains EMI shielding, and never impacts the safety or integrity of your gear.

Designed for high-current equipment, this compact device also works without obstructing any of your other connectors and cables. And at just 2.8 ounces, it won’t put a strain on your IEC. Eliminate the hum and hear more of what you want to experience with DCBlocker+ — backed by our satisfaction guarantee.