PRO DI Series
PRO MMD
The PRO MMD Passive DI is ideal for keyboard instruments, electronic drum pads, DJ equipment, and media players. No batteries or +48V power supply are required, and a low distortion transformer is built in. PRO MMD is also specially equipped with 3.5mm TRS and RCA input terminals for multimedia systems.
OVERVIEW
- ．Built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformer for each channel
- ．The input socket uses a pair of TRS jacks, a pair of RAC and a mini TRS.
- ．All input jacks can be using for through out.
- ．There is 0dB/-20dB input signal attenuation switch
- ．The output is equipped with a GND/LIFT switch
DESCRIPTION
PRO MMD is a dedicated DI box for passive multimedia, without the need to install battery or provide phantom power.
PRO MMD has a pair of built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformers which has a special copper foil layer and a dedicated ground layer, which allows this device to restore high signal/noise ratio and dynamic sound, and can avoid unnecessary leakage caused by radio frequency interference, ground interference and potential difference.
PRO MMD is particularly suitable for play deck, computer, and video equipment. It converts high-impedance signals into low-impedance balance signals which is convenient for extending the wiring distance and blocking interference.
The input end of PRO MMD adopts two TRS sockets, a pair of RAC sockets and a mini TRS socket, any one socket can be used as input or through out. In addition, it is equipped with a 0/-20dB attenuation switch, which is suitable for various types of audio signals with high and low impedance. The output terminal is also equipped with a ground/floating button, in order to quickly eliminate ground noise.
INPUT PAD ATTENUATION
The most widely used DI box is to connect electronic musical instruments, sound source broadcasting Amplifiers and computers, convert their output signals into balanced signals, and then extend the transmission distance.
The most ideal state is to set the attenuator to 0dB position (button up). For some high-level output signals, you can press the button to make the signal is attenuated by 20dB to avoid clipping caused by signal overload.
The most ideal state is to set the attenuator to 0dB position (button up). For some high-level output signals, you can press the button to make the signal is attenuated by 20dB to avoid clipping caused by signal overload.
ELIMINATING GROUND LOOP NOISE
The built-in channel independent balanced isolation transformer has solved the potential difference leakage problem. When the system causes a ground loop due to poor wiring, the noise can be eliminated through the GND/LIFT button.
The GND/LIFT button determines whether pin-1 of the output XLR is grounded, grounded when it bounces, and disconnected from ground when pressed.
The GND/LIFT button determines whether pin-1 of the output XLR is grounded, grounded when it bounces, and disconnected from ground when pressed.
SPECIFICATIONS
| PRO MMD | |||
|---|---|---|---|
| Circuit principle | Passive/Transformer balance output | ||
| Input connector | 2 x TRS, 1 x Mini TRS, 1 pair of RCA | ||
| Thru connector | Any one of the input sockets | ||
| Input pad switch | 0/-20dB push button | ||
| Output connector | 2 x Male XLR through ISO Transformer | ||
| Output GND/LIFT switch | Shared push button | ||
| Input impedance | 1KΩ / 0dB & -20dB | ||
| Output impedance | 50Ω | ||
| Max. input level before clipping | +22dB | ||
| Max Output level | +22dB | ||
| Frequency response | 20Hz-20KHz, -0.3/0.9dB | ||
| S/N ratio @20Hz~20KHz un-weight | >120dB | ||
| T.H.D. @1KHz 0dBV output | <0.02% | ||
| Transformer Ratio | 1.25:1 | ||
| Chassis | 1.6mm/1.2mm steel cabinet and chassis | ||
| Surface finished | Durable complex painting | ||
| Dimension (W x D x H) | 78 x 124 x 46 mm | ||
| Weight | 0.63Kg | ||
| Shipping weight | 0.66kg | ||
| Packing per carton | 20pcs/13.80Kgs | ||
| Shipping dimension per carton | 305 x 283 x 195mm | ||