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PARAMETER TEST CONDITIONS
In the development and manufacturing process, Audio Precision's 2700 series and 500
series are used to test and verify electrical characteristics.
FEATURES
•
One input & three output audio splitter
•
CH-1/CH-2 are equipped with separate UNiKA-PRO
transformer
•
Use XLR jack for input
•
Set the PHASE REVERSE button for CH-2 input
•
The output is equipped with independent GND/LIFT switches
WHEN TO USE PRO IS2
PRO IS2's CH-1/CH-2 are each equipped with independent EI9AE3R3 professional audio
isolation transformer, which is a transformer that works in the audio range, also known as
a low-frequency transformer. The frequency range is generally from 20 to 20000 Hz. It is
mainly used for audio transmission between systems or devices. It can completely isolate
the potential difference between two systems, avoid hum interference caused by ground
loop problems, and prevent excessive potential difference from damaging the input level
of the device. The safe transmission of signals is an essential product for long-distance
transmission of analog audio systems.
However, since it does not have an input amplifier circuit and attenuator, it can only transmit
balanced signals through an isolation transformer or convert unbalanced signals into
balanced signals for transmission, and does not have the function of increasing the level. If
the input signal is of a high-impedance type, such as musical instruments or some players,
it is recommended to use other DIs with input attenuators in the PRO series to transmit
signals. These DIs also have built-in EI9AE3R3 professional audio isolation transformer.
The CH-2 is attached with an invert button. If your wire's hot pin is pin-3, you can press this
button to switch the hot pin to pin-2.
Each output has an independent GND/LIFT button to ground or float pin-1 of the output to
eliminate noise or leakage in the event of ground noise or inadvertent ground loops.
UNiKA
PRO IS2
User Manual
TM
EI9AE3R3 1.25:1 isolation
2
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