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.

RTI - AMR-220 2 x 1 Audio Mixer / Amplifier - Key Features:

• Two input, one output audio mixer/amplifier.
• Two analogue 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.

RTI - AMR-220 2 x 1 Audio Mixer / Amplfier - Specifications:

• 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)
• Weight: 0.5kg
• Warranty: Three Years (Parts & Labour)

All features and specifications subject to change without notice.

RTI - AMR-220 2 x 1 Audio Mixer / Amplifier - Resources & Downloads:

• RTI - AMR-220 2 x 1 Audio Mixer / Amplifier Datasheet
• RTI - Commercial Brochure
• RTI - Residential Brochure