PRO DI Series
PRO TWO
The PRO TWO dual channel 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 isolation transformer is built in.
OVERVIEW
- ．Built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformer for each channel
- ．The input socket uses a pair of TRS jacks
- ．Use a pair of TRS jacks as through out terminal
- ．There is 0dB/-20dB input signal attenuation switch
- ．The output is equipped with a GND/LIFT switch
DESCRIPTION
PRO TWO is a passive dual-channel DI box. No need to install battery or provide phantom power to make it work.
PRO TWO 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 TWO is particularly suitable for electronic musical instruments, recording studios and fixed installation projects that do not use mixers. It converts high-impedance signals into low-impedance balanced signals, which facilitates extending the wiring distance and blocking interference.
The PRO TWO uses a pair of TRS socket on the input, and a pair of TRS through out are convenient for musician to pass the direct signal to the instrument amplifier. 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 GND/LIFT button to quickly eliminate ground noise.
INPUT PAD ATTENUATION
The most widely used DI box is to connect electronic musical instruments, sound source of A/V equipment 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 TWO | |||
|---|---|---|---|
| Circuit principle | Passive/Transformer balance output | ||
| Input connector | 2 x TRS | ||
| Thru connector | 2 x TRS | ||
| 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, -0.05/+0.25dB | ||
| 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 | 0.64Kg | ||
| Shipping weight | 0.67kg | ||
| Packing per carton | 20pcs/14.00Kgs | ||
| Shipping dimension per carton | 305 x 283 x 195mm | ||