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        Alibaba.com offers 1,499 4 channel digital amplifier products. About 44% of these are professional audio, video & lighting, 27% are amplifier, and 7% are integrated circuits. 

A wide variety of 4 channel digital amplifier options are available to you, such as 2 (2.0), 4, and 3 (2.1). You can also choose from resistance sensor. As well as from car amplifier, home amplifier, and mini amplifier. 

There are 1,495 4 channel digital amplifier suppliers, mainly located in Asia. The top supplying countries or regions are China, Singapore, and Hong Kong S.A.R., which supply 96%, 1%, and 1% of 4 channel digital amplifier respectively. 

 channel digital amplifier products are most popular in United States, India, and South Korea.