The DMM 4/2/4 is a digital automatic stereo mixer with four balanced microphone inputs, two stereo AUX inputs and one stereo recording
output and one stero master output as well as a headphone output including volume control.
A unique and highly effective, intelligent mixing algorithm automatically allocates gain among the system microphones (NOM attenuation). A
special noise detection function and the “Noise Sensitive Threshold” algorithm (NST) prevent accidental activation of input channels.
The mixing algorithm also includes a “Last Mic On” function and a “Best Mic On” mode. Each input channel features low cut as well as LF and
HF shelving filters.
A dbx® compressor/limiter is included in the algorithm to provide a significant improvement in sound quality. Each channel offers switchable
gain (Mic/Line, Mic-Lo/Mic-Hi), switchable phantom power, and an incremental level control with LED level and peak hold display. The
automixing and ducking functions can be enabled and disabled for each channel separately. With the Balance/Pan function the signals of each
input can be aligned to the left or right channel of the stereo master output.
An expansion connector enables multiple DMM 4/2/4 mixers to be daisy-chained for larger systems. A rear-panel control I/O port provides logic
in and outputs for controlling external devices. Also available on the rear side is a RS 232 interface for PC connectivity. The DMM 4/2/4 is
housed a rugged 19” case with an integrated power supply.

Specification
Inputs: Mic/Line 1-4: 3-pin. Female XLR Connector
Type: balanced
Nominal level -60 dB
Max. level: +15dB
Frequency responce: 20Hz – 16kHz
Dynamic range: >90dB
Impedance: >8kΩ
Phantom power: 48V DC
AUX-Inputs 5-6: 2x RCA Stereo
Type: Stereo unbalanced
Nominal level: ±0dB
Max. level: +15dB
Frequency responce: 20Hz – 22kHz
Dynamic range: >90dB
Impedance: >15kΩ
Outputs: Line Stereo: 1 x 3-pin male XLR connector
Type: balanced
Nominal level: ±0dB
Max. level: +10dB
Frequency responce: 20Hz – 20kHz
Dynamic range: >90dB
Impedance: <100Ω
Recording Stereo.: 1x RCA Stereo
Type: balanced
Nominal level: ±0dB
Max. level: +10dB
Frequency responce: 20Hz – 20kHz
Dynamic range: >90dB
Impedance: <100Ω
Control-Input: Analog: 26-pin. SubD I/O´s via logic contacts and VCA.
PC: RS 232
General: Sample frequency: 48kHz
Format: 24Bit
Operating temperature: +5 - 45°C
Max. humidity during operation: 83%
Power supply: 100 – 240V/50-60Hz
Max. power consumption: 35VA
Size: 483 x 44 x 203 mm (19.0 x 1.7 x 8.0 in.)
Color: black RAL 9005
Weight: 3,5 kg (7.7 lbs.)