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Key Digital KD-AMP220 2-Ch Compact Digital Amplifier, 20W Per Ch at 8 Ohm

Key Digital KD-AMP220 2-Ch Compact Digital Amplifier, 20W Per Ch at 8 Ohm

SKU: KDAMP220
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Key Digital KD-AMP220 Specifications

I/O Connections

I/O Connections

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  • Analog Inputs

    One (1) 6-pin Phoenix Connector
    One (1) 3.5mm TRS Connector

  • Microphone Input

    One (1) 3-pin Phoenix Connector

  • Control (Front Panel)

    Push Button, Rotary Knob

  • Control (Rear Panel)

    RS-232 via One (1) 3-pin Phoenix Connector
    IR via One (1) 3.5mm TRS Connector

  • Microphone 48V Phantom Power Mode Switch

    One (1) 2-Position Slide Switch

  • Output Signal Format Selector

    One (1) 3-Position Slide Switch

  • Balanced/Unbalanced Analog Audio Output

    One (1) 6-pin Phoenix Connector

  • Speaker Output

    One (1) 4-pin/5 mm Phoenix Connector

  • 24V DC Power

    One (1) Barrel (5.5 mm OD, 2.1 mm ID)

Audio Performance

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  • Input Impedance

    >10k Ohm

  • Output Impedance

    50 Ohm Analog Output
    4/8 Ohm Speaker Output

  • Maximum Rated Power Output

    40 Watts

  • Frequency Response

    120 Hz to 20 kHz

  • Common Mode Rejection Ratio (CMRR)

    >70 dB at 20 Hz to 20 kHz

  • Signal to Noise Ratio (SNR)

    80 dB (Max)

  • Total Harmonic Distortion + Noise

    1% at 1 kHz; 0.3% at 20 kHz at Nominal Level

  • Voltage Gain

    32 dB

Power, ESD and Regulatory

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  • Minimum Power Consumption

    5 watts

  • Maximum Power Consumption

    45 watts

  • Power Supply Input Voltage

    100-240v AC at 50/60 Hz at 0.5 A

  • Power Supply Output Rating

    24V DC at 2.71 A

  • ESD Protection

    15kV

  • Device Regulatory

    CE, FCC

  • Power Supply Regulatory

    CE, FCC

Chassis and Environmental

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  • Enclosure

    Painted Aluminum

  • Operating Temperature

    +32 to +104 Degree F (0 to +40 Degree C)

  • Operating Humidity

    20% to 90%, Non-condensing

  • Storage Temperature

    +14 to +140 Degree F (-10 to +60 Degree C)

  • Storage Humidity

    20% to 90%, Non-condensing

  • Dimensions

    8.661 x 1.299 x 4.094" (21.9 x 3.29 x 10.39cm)

  • Weight

    1.153 lb (0.522kg)

Other

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  • UPC Code

    815996020358

About Key Digital KD-AMP220

The KD-AMP220 is a 2x20 watt Class-D amplifier with 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.

Class D 2 Channel Amplification: 2Ch 20 WPC @ 8 Ohm, 40 WPC @ 4 Ohm BRIDGED

Mixing: Output is a mix of microphone and the selected audio input

Signal Processing:
• Variable volume level set for each input
• Variable volume, bass, and treble for output

Inputs: Microphone (3-pin balanced, condenser/dynamic), 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

Control: Front panel, RS-232, IR with external IR Sensor (included)

Control System Support: Compass Control Pro ready. Fully controllable by all IR, and RS-232 supported control systems via open API.

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What's in the box:

  • KD-AMP220 2-Channel Compact Digital Amplifier
  • IR Remote Control
  • Key Digital 3 Year Limited Warranty