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PRO BT5 is a passive DI box specially designed for playing back music from wireless mobile devices and built-in Bluetooth Ver.5.0 A2DP DUAL MODE module. The balanced output level will not be affected by the potentiometer. The output side is equipped with a TYPE-C USB terminal which requires a 5VDC power adaptor, power bank or USB port from computer to power the BT5 such as the power supply method of the general mobile device. BT-5 is excluding the TYPE-C cable and power adaptor. The built-in Bluetooth module has BR/EDR dual-mode control function, A2DP stereo playback mode and BLE energy-saving mode. And using Qualcomm chips and DA/DSP, audio converting and sampling rate are 16bit and 44.1KHz. The PRO BT5 has a pair of built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformers. The transformer has a special copper foil layer and a dedicated grounding layer, which can restore the high signal/noise ratio and dynamic sound of the device, and avoid unnecessary Leakage caused by radio frequency interference, grounding interference and potential difference. PRO BT5 is especially suitable for mobile phones, computers and any of Bluetooth music players. It converts wireless signals into low-impedance balanced signals, which is convenient for extending the wiring distance and blocking interference. PRO BT5 has built-in mini TRS headphone monitor output and monitor volume control, which can drive 16Ω~300Ω headphones to be allowing users to monitor the content that needs to be played in advance. Note: Since the device does not include charging identification IC, some of power bank with QC function may not be available or may stop supplying power halfway because the IC is not detected. On the other hand, the power bank with automatic stand by mode is not recommended.
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.
PRO ONE has a built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformer, 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 ONE 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 ONE uses a balanced/unbalanced combo socket on the input, and a TRS through out is 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.
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.
PRO USB is a passive DI box specially designed for mobile devices. It is compatible with Windows, Mac OSX, iOS and Android systems. It does not require any drivers to achieve plug and play. It can be used as a signal impedance matcher for mobile devices and built-in headphone amplifier and volume control. PRO USB is the first to use TYPE-C as the terminal to connect to mobile phone and computer. The USB audio decoder combines Com True CT-7601SR and Cirrus Logic CS-43131 to achieve 192KHz/32bit performance, and are compatible with DSD digital formats and all common lossless and compressed music formats. The PRO USB has a pair of built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformer for each channel isolation transformers. The transformer has a special copper foil layer and a dedicated grounding layer, which can ensure the high signal/noise ratio and dynamic sound of the device, and avoid unnecessary Leakage caused by radio frequency interference, grounding interference and potential difference. PRO USB is especially suitable for mobile phone, computer and media player. It converts high-impedance signals into low-impedance balanced signals, which is convenient for extending the wiring distance and blocking interference. PRO USB has built-in mini TRS headphone monitor output and monitor volume control, which can drive 16Ω~600Ω headphones.
PRO IS2 is a passive two-input and two-output isolated signal splitter without the need to install batteries or provide phantom power. PRO IS2 has a pair of built-in UNiKA-PROTM EI9AE3R3 1.25:1 isolation transformer with special coating and surrounded by Oriental silicon steel shield 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 IS2 is particularly suitable for recording studios, live performances and fixed installation projects. PRO IS2’s input uses Combi sockets, suitable for both balance XLR and TRS plugs. The CH-1/CH-2 output channels each have independent UNiKAPROTM isolation transformer and independante GND/LIFT switch for easy connection to remote or different power sources at the end of the equipment to eliminate the leakage and noise caused by the potential difference and the ground loop. 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.
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