AMR-220 2-Channel Mixer Amplifier – 20W

The AMR-220 is a compact-size Class-D digital mixer/amplifier for classroom or meeting room applications requiring switching of two audio sources (e.g., laptops, video conference systems). Additionally, a microphone can be mixed with the line-level audio sources. The adjustable balanced/unbalanced microphone input supports condenser, dynamic, or wireless microphones.

The loop output can be used to share the same audio sources with multiple AMR-220s that power more speakers in different audio zones. The AMR-220 offers various control options, including RS-232, as well as a convenient top control panel.

Included in the box:
AMR-220, power cord, 3-pole pluggable terminal block (1), 4-pole pluggable terminal block (1), RS-232 cable (1), power adapter 24V DC 2.71A (1), plastic cushions (4)

  • Two input, one output audio mixer/amplifier.
  • Two analog audio inputs (switchable).
  • Balanced/unbalanced adjustable microphone input with 48V phantom power for condenser, dynamic, or wireless microphones.
  • Supports microphone mixing to an audio line source
  • Built-in Class-D amplifier
  • Power Output: 2 x 20 Watts (4 Ohms) or 1 x 40 Watts bridged (8 Ohms).
  • EQ control (bass / treble).
  • RS-232 control.
  • Audio loop output to share audio sources with multiple amplifiers.
  • Compact form factor with noiseless convection cooler.
Power +24 VDC
Mounting Surface / wall mount
Audio Input One Line Input Stereo (RCA jack)
One Line Input Stereo (3.5 mm jack)
Microphone Input One balanced/unbalanced (3-pin Phoenix Connector),
Switchable Line / 48V Phantom Power
Input Impedance >10K Ohms
Audio Output One Stereo Speaker Output (4-pin terminal block)
One Loop Output (3.5 mm jack)
Rated Output Power 2 x 20 Watts @ 4 Ohms / 1 x 40 Watts bridged @ 8 Ohms
Speaker Impedance 4 to 8 Ohms
Frequency Response 20Hz to 20KHz
Bandwith 20Hz to 25Khz
Signal-to-Noise Ratio 80dB at maximum output
Channel Separation >75dB @ 20Hz to 20Khz
Voltage Gain 32dB
CMRR >70dB @ 20Hz~20KHz
Total Harmonic Distortion + Noise @ 1KHz 1% at nominal level
Total Harmonic Distortion + Noise @ 20KHz 0.3% at nominal level
Front Panel Control 5 Buttons for Input Select, Volume and EQ
RS232 Control One, Bidirectional control (3-pin Phoenix Connector)
Operating Temperature C -10 to +40 degrees F +14 to +104 degrees
Operating Humidity 5% to 95% Non-condensing
Dimensions WxHxD 4.84" (123mm) x 1.55" (39.5mm) x 3.42" (87mm)
Warranty Three Years (Parts & Labor)

All features and specifications are subject to change without notice.