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When it comes to amplifying sound in large outdoor areas, two devices that come

The megaphone, also known as a bullhorn, is a device that amplifies sound. It is

As a powerful tool for amplifying sound, the megaphone has been used in various

A megaphone amplifies sound by increasing the sound pressure level of the v

A megaphone, also known as a bullhorn, is a portable device that amplifies the u

In this summer, UM Audio launches new 80W handheld megaphone, the model number i

If you want to get your voice heard, you’ll need the megaphone speaker you

Megaphone, also know as bullhorn speaker or loud hailer, is mainly used for soun

Megaphone, also know as bullhorn speaker or loud hailer, is mainly used for soun