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2. Headphone amplifier - Wikipedia

   en.wikipedia.org/wiki/Headphone_amplifier

   A headphone amplifier is a low-powered audio amplifier designed particularly to drive headphones worn on or in the ears, instead of loudspeakers in speaker enclosures. Most commonly, headphone amplifiers are found embedded in electronic devices that have a headphone jack, such as integrated amplifiers , portable music players (e.g., iPods), and ...

3. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   United States: a 2010–2011 summary of state hunting regulations for the use of night-vision equipment in hunting [99] listed 13 states in which the equipment is prohibited, 17 states with various restrictions (e.g. only for certain non-game species, and/or in a certain date range), and 20 states without restrictions. It did not summarize the ...

4. Motorboating (electronics) - Wikipedia

   en.wikipedia.org/wiki/Motorboating_(electronics)

   In electronics, motorboating is a type of low frequency parasitic oscillation (unwanted cyclic variation of the output voltage) that sometimes occurs in audio and radio equipment and often manifests itself as a sound similar to an idling motorboat engine, a "put-put-put", in audio output from speakers or earphones.

5. List of Turtle Beach Corporation products - Wikipedia

   en.wikipedia.org/wiki/List_of_Turtle_Beach...

   It is considered one of the leading gaming audio brands. [2] Gaming headsets have been Turtle Beach's primary product offering since around 2005. [1] Turtle Beach headsets are generally cross-compatible between current-generation consoles like the Xbox One, PlayStation 4, Nintendo Switch, and PCs, as well as most mobile and tablet devices.

6. Personal sound amplification product - Wikipedia

   en.wikipedia.org/wiki/Personal_sound...

   The amplifier (an electronic circuit) increases the amplitude of the electric signal using a power source (battery). The speaker converts the amplified electric signal back into a sound wave. The volume (gain) control is used to adjust the amount of amplification applied to the electric signal and thus, indirectly, controls the sound volume.

7. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   A telephone amplifier provides basic pin-alignment similar to a telephone headset adapter, but it also offers sound amplification for the microphone as well as the loudspeakers. Most models of telephone amplifiers offer volume control for the loudspeaker as well as a microphone, mute function and switching between handset and headset.