Bluetooth headsets are usually used with fairly small-sized, 32Ω speakers. By connecting the audio signal from a Bluetooth headset to an external amplifier, it is possible to amplify the signal. The Bluetooth stereo headset then acts as a bridge, delivering the audio signal from the handheld device to a stereo audio amplifier and creating a wireless stereo audio system.
A block diagram of the system is described in Figure 1.
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