DSPPA has passed the AEO certificate and been authorized as a general certified enterprise (GCE) of original Class A.

DSPPA Offers Free Services for Medical Supplies Purchasing

DSPPA successfully attended the ISE 2020 in Amsterdam RAI, Netherlands, on 11-14 Feb., 2020.

Most of the equipment in the audio system needs electricity. Although the input is AC power from the power grid, all the circuit work requires DC power. Except for the individual battery, it must undergo the process of voltage transformation, rectification and filtering to complete the conversion. P......

The connection of different systems must use a balanced isolation transformer to connect the audio system to the audio system of the TV OB truck; the connection of the system to a large electronic display screen; or the connection to the electronic computer, etc., generally a balanced isolation tran......

When playing the device, the two devices will interfere with the transmission of their respective frequency bands, which will cause a kind of sound pollution, which will not only affect the audiovisual but also cause damage to the machinery and equipment. The best solution is to separate the variou......