Behringer HD-400 Ultra-Compact 2-Channel Hum Destroyer MICROHD HD400 The HD400 is the ultra-affordable way to quickly and easily clean up your act! Whether you’re recording or performing, it’s important to keep AC hum out of the mix. No matter the quality of the venue’s wiring, the MICROHD HD400 Hum Destroyer eliminates AC hum quickly and reliably. Mighty Hum Hunter The HD400 features two channels allowing you to eliminate hum in two mono signals or one stereo signal. Placing the HD400 in-line between your stereo mixer and power amps for a squeaky-clean sound free of AC hum. It breaks ground loops safely while maintaining the highest sound quality. It can even convert your unbalanced signals into balanced without any signal degradation. Hum Killer of a Deal The incredibly-handy MICROHD HD400 is small enough to ride to the gig in your pocket, but really big when it comes to cleaning up your sound. Pick one the HD400 at your local BEHRINGER dealer, or get yours online today – and make AC hum a thing of the past!