Housed in a roadworthy 3RU chassis with internal power supply, a single DN1248 Plus provides twelve input channels, each feeding four outputs, two of which are electronically balanced and two which are transformer isolated. All the inputs and output one are also duplicated on the rear of the unit, so the patching options are extremely flexible. The microphone preamplifier is a Midas Heritage series unit, specially adapted to the task and providing all the great sound and headroom for which Midas preamps are world famous.

Several factory options are available for DN1248 Plus: the ‘DP’ option, which provides (at very low cost) a second, linked internal PSU to provide auto-backup in the case of PSU failure. The ‘AT’ option provides transformer balancing for all 48 outputs, and the ‘FM’ variant combines both ‘DP’ and ‘AT’ advantages. Plus, the whole unit is designed so that a customer can easily retrofit the multipin connector and input / output configuration of their choice.

Inputs - two parallel connected female XLR connectors, one on the front panel and the rear panel.
Input Impedance > 2kOhm
CMRR > -100dB @ 100Hz to 10kHz
Equivalent input noise < - 100dBu @ unity gain
Connectors 3 pin female XLR (external), 3 way terminal strip (internal)
Signal present level > - 25dBu
Signal clip level > + 21dBu
Outputs
Electronically balanced - one output with one front and one rear panel male XLR connectors, one output with one rear panel male XLR connector only
Source impedance 50 Ohm
Min Load 600 Ohm
Max Level > + 21dBu @ 1kHz
Connectors 3 pin male XLR (external), 3 way terminal strip (internal)
Transformer balanced & isolated - one male XLR connector on the front panel for each output
Source impedance 70 Ohm
Min Load 600 Ohm (-3dB level loss into 200Ohm )
Max Level > + 18dBu @ 1kHz
Connectors 3 pin male XLR (external), 3 way terminal strip (internal)
Performance
Electronically balanced outputs
Frequency response + 0 / -0.5dB 20Hz to 20kHz
Distortion < 0.01 % @ 1kHz +4dB
Transformer balanced & isolated outputs
Frequency response + 0 / -1.0dB 20Hz to 20kHz
Distortion < 0.04 % @ 1kHz +4dB
Terminations.  
Audio Inputs / Outputs 3 pin XLR
Power IEC
Power Requirements
Voltage 90 to 250V a.c @ 50/60Hz
Consumption < 75 VA
Weight
Nett 7.4 kg
Shipping 8.4 kg
Width 483 mm (19 inches)
Depth 300 mm (12 inches)
Height 132 mm (5.2 inches)