The DH20 single hybrid provides excellent sound and easy installation. With 16-bit technology, it delivers deep and stable hybrid null ensuring maximum isolation between the send and caller audio. That means no echo and no bottom of the barrel sound. Features: 16-bit DSP digital technology ensuring the very best audio quality and the most reliable hybrid null; built-in speaker amplifier; mic or line input; selectable AGC (automatic gain control) ensures that every caller is at the same audio level; selectable caller ducking reduces the caller's audio level when the announcer is speaking; selectable auto answer/auto disconnect; remote control and status; accepts all worldwide voltages; balanced XLR I/Os.

For instructions on how to hook up a telephone hybrid to a mixer for recording phone interviews, click on this How-To pdf.