The phrase "amplification device" is correct and usable in written English.
It can be used to refer to a device that increases the strength of a signal, sound, or other forms of energy.
Example: "The musician used an amplification device to ensure that the audience could hear the performance clearly."
Alternatives: "sound amplifier" or "signal booster".
"And Facebook is just the amplification device.
"He didn't have a microphone, so he used the bay as a natural amphitheater and the water as an amplification device," Mr. Cordeiro said.
Gas Electron Multiplier (GEM) detector has great potential to improve TPC performances when used as amplification device.
The sequence-conserved group M HIV-1 RT-LAMP primers, coupled to a low-cost amplification device, may improve diagnosis of acute infection at the POC and provide timely confirmation of HIV status.
Collectively, these results indicate that the ChatterVox™ amplification device reduced the speaker's vocal intensity level at the microphone, while it augmented the voice heard at the back of the classroom.
I expect him to be an amplification device for a great many people.
This gathering, which begins in Washington Square Park, encourages participants to load provided tracks of music onto their personal portable amplification devices.
Although amplification devices are available in London theaters, the Theater Access Project believes that this will be the first use of open captioning there.
Mr. Gerry built an open-air performing arts center there with seating for 5,000, lawn space for 12,000, an air-conditioned museum pavilion, a staff of guides who wear uniform lavender T-shirts, and a kiosk where the hard of hearing can rent amplification devices.
The work suffers from a lack of imagination on the writing end, but it's still evocative — particularly of the protesters in Zuccotti Park, who were forbidden from using amplification devices and resorted to what became a signature of their movement, the "people's microphone".
Similarly, amplification devices are used to hear faint sounds.
