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AMR-350 3 x 1 Audio Amplifier

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This product is discontinued.

The AMR-350 is a compact-sized Class-D digital amplifier for classroom or meeting room applications requiring switching of three audio sources (e.g., laptops, video conference systems, Blu-ray players).

AMR-350 features two analog audio inputs and one digital optical audio input. The Class-D amplifier powers the connected speakers with 2 x 50 Watts Stereo or 1 x 100 Watts in bridge mode. The loop output can be used to share the same audio sources with multiple AMR-350s that connect more speakers in different audio zones. The AMR-350 can be controlled via RS-232, Ethernet, web interface and the front control panel.

Included in the box:
AMR-350, power cord, mounting ears (2) with screws, 3-pole pluggable terminal block (1), 4-pole pluggable terminal block (1), power adapter 36V DC 2.66A (1), plastic cushions (4)

Key Features
  • Three input, one output audio amplifier.
  • Built-in Class-D amplifier
  • Power Output: 2 x 50 Watts Stereo (8 Ohms) or 1 x 100 Watts bridged (4 Ohms).
  • EQ control (bass / treble).
  • Volume knob with LED bargraph.
  • RS-232 control.
  • Ethernet control
  • Web interface control and configuration.
  • Audio loop output to share audio sources with multiple amplifiers.
  • Compact form factor with noiseless convection cooler.
Power +36 VDC, 2.66A
Mounting Surface / wall mount or free standing
Audio Input One Line Input Stereo (RCA jack)
One Line Input Stereo (3.5 mm jack)
One Digital Optical Input (TOSLINK)
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 50 Watts Stereo @ 8 Ohms / 1x100 Watts bridged @ 4 Ohms
Speaker Impedance 4 to 8 Ohms
Damping Factor >100
Frequency Response 20Hz to 20KHz
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 50 Watts
Front Panel Control 2 Buttons, 1 Knob for Input Select, Volume and EQ
RS232 Control One, Bidirectional control (3-pin Phoenix connector)
Ethernet Control Port One, 10/100Base-T,RJ45 Connection
Operating Temperature C -10 to +40 degrees F +14 to +104 degrees
Operating Humidity 5% to 95% Non-condensing
Dimensions WxHxD 5.82" (148mm) x 1.73" (44mm) x 6.49" (165mm)
Weight 1.58lb (720g)
Warranty Three Years (Parts & Labor)

All features and specifications subject to change without notice.

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