Key Digital’s KD-AMP220 compact digital audio amplifier’s input connections accommodate microphone, line level balanced and line level 3.5-millimeter stereo analog audio inputs. The output is a mix of audio from the microphone input and the selected audio input. Each input has variable volume level set — perfect for presentation spaces as KD-AMP220’s internal pre-amp accepts direct microphone plugin and can provide 48V phantom power.
Speaker level output may be set to bridge, stereo or mono mode. Integrators may sum left and right channels to a single speaker in bridge mode. For stereo applications, KD-AMP220 may be configured to send left and right channels to separate speakers. Mono mode can be useful in speech and voice enforcement applications.