The Key Digital KD-AMP220 is a 2x20-watt Class-D amplifier with an 8 ohm speaker output ideal for installation in presentation spaces. Input connections accommodate microphone, line level balanced/unbalanced, and line level 3.5mm stereo analog audio inputs. The output is a mix of audio from the microphone input and the selected audio input. Microphone and output volume levels may be variably controlled via IR, RS-232, or the front panel, and speaker level output may be set to bridge stereo or mono mode.
Features
• Class D 2-Channel Amplification: 20W per channel @ 4 Ω or 40W @ 8 Ω bridged
• Mixing: Output is a mix of microphone and the selected audio input
• Signal Processing of variable volume level set for each input.
• Variable volume, bass, and treble for output
• Inputs: Microphone (3-pin balanced), 6-pin balanced stereo, 3.5mm stereo
• Phantom Power: 48V phantom power for integration with condenser microphones
• Outputs: Pre-amp line level (6-pin balanced), speaker level
• Speaker Level Output: Bridge, stereo, or mono modes selectable
• Noise gate for consistent audio levels, prevention of ambient noise
