Audio-technica AT-DMM828 SmartMixer® Eight-channel Digital Matrix Mixer
The AT-DMM828 SmartMixer® latest addition to Audio-Technica’s family of automatic mixers. This digital automatic 8 channel matrix mixer is designed to provide automatic mixing functions for installed sound, house of worship, broadcast and conference applications. Engineered with intuitive, easy-to-use software GUI, the AT-DMM828 automatically keeps the number of open microphones to a minimum, bringing background noise and feedback under control and providing increased clarity and audio quality.
- Eight balanced inputs allow use with both mic- and line-level signals
Each input provides:
-Phantom power (48V), individually selectable
-Individual gain and volume controls
-Gate attenuation (adjustable)
-Low-cut filter (individually selectable via SmartMixer Software)
- RS232 and USB data ports provide a connection point for a PC with included SmartMixer Software
- Compatible with Crestron® and AMX® systems
- External control capability enables the SmartMixer to activate other devices
Force-On – allows an external contact closure to force its associated input to turn on
Force-Off – allows an external contact closure to force its associated input to turn off
VCA Control – Volume up/down
- Selectable NOMA (Number of Open Mics Attenuated) circuitry helps control feedback
- Priority pre-select feature allows priority of each microphone to be independently assigned
- Last Mic On selectable for continuous room ambiance
- Linking capability for 16 units (up to 128 channels)
- Equipped with eight balanced audio outputs to drive amplification systems or other equipment
- Detailed settings controlled through SmartMixer Software
- Mounts in a single 19" rack space via integral rack mount
Input Impedance |
Mic Level: 6600 ohms
Line Level: 8500 ohms |
Output Impedance |
Balanced: 200 ohms |
Maximum Input Level |
-42 dBu (gain at Max) |
Maximum Output Level |
24 dBm (THD+N at 1%) |
Maximum Gain |
64 dB |
Frequency Response |
20 to 20K Hz (±3 dB) |
Equivalent Input Noise |
-120 dBu* |
Microphone Phantom Power |
+48V DC |
Control Voltage Out |
3.3V DC |
Power Supply |
100/240V AC (auto-select), 50/60 Hz, 20W |
Operating Temperature |
32° to 104° F (0° to 40° C) |
Dimensions |
18.98" (482 mm) W x
9.05" (230 mm) D x
1.75" (44 mm) H
(not including feet, knobs and connectors) |
Weight |
5 lbs. 5 oz (2.4 kg) |