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Have all active speakers a slight hiss/noise when turned on?

When I turn on my JBL IRX108BT speakers, a faint hiss starts. The level of the hiss is not affected by the volume, and it also doesn't seem to depend on what is connected or not. Is there any way to get rid of the hiss, or is it normal for an active speaker to have some "base-level noise"? I also have a pair of JBL 104BT, and they are completely silent regardless of volume.

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