A device or circuit that increases the power, voltage, or amplitude of a signal.
Electronic Device
EN: An electronic device that increases the power of audio signals, used in sound systems.
翻譯: 一種增強音訊訊號功率的電子設備，用於音響系統中。
General Booster
EN: Anything that increases the strength, magnitude, or effect of something.
翻譯: 泛指任何能增強某事物強度、規模或效果的東西。
Guitar Amp
EN: Specifically, an amplifier for an electric guitar, shaping its sound and volume.
翻譯: 特指電吉他的放大器，用於塑造其音色與音量。
小提醒：Remember that an 'amplifier' is the device itself, while 'amplification' is the process or result of making something louder or stronger.
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Amplifier" from YouTube Videos
Eric Giler demos wireless electricity
TED
“You've got a coil. That coil is connected to an RF amplifier that creates a high-frequency oscillating magnetic field.”
1. an electronic device that increases the strength of electrical signals, especially sound signals
一種增強電信號（尤其是聲音信號）強度的電子設備
He connected his guitar to the amplifier to make it louder.
他將吉他連接到擴大機上，讓聲音變大。
The sound system has a powerful amplifier for the main speakers.
這套音響系統為主要揚聲器配備了強力的擴大機。
2. something that increases the effect, intensity, or significance of something else
能增強其他事物效果、強度或重要性的東西
Social media can act as an amplifier for both good and bad news.
社群媒體可以成為放大好消息和壞消息的管道。
Her passionate speech was an amplifier for the movement's message.
她充滿熱情的演說強化了這場運動的訴求。
3. a device or component in a scientific instrument that increases the magnitude of a signal or stimulus
科學儀器中用於增強信號或刺激強度的裝置或元件
The telescope uses a light amplifier to observe distant stars.
這台望遠鏡使用光放大器來觀測遙遠的星星。
The signal from the sensor was too weak, so they added an amplifier to the circuit.
感測器的信號太弱，所以他們在電路中加裝了一個放大器。
| Pattern | Meaning | Example |
|---|---|---|
| amplifier + of + noun | ...的放大器 | The artist is an amplifier of social discontent. (這位藝術家是社會不滿情緒的放大器。) |
| amplifier + for + noun | 用於...的放大器 | This device acts as an amplifier for the weak radio signal. (這個裝置是微弱無線電訊號的放大器。) |
| amplifier + on + noun | 在...上的放大器 | He served as an amplifier on the controversial issue. (他在這個爭議性議題上扮演了放大器的角色。) |
| use/act as + an amplifier | 使用/作為放大器 | Social media can act as an amplifier for misinformation. (社群媒體可能成為錯誤資訊的放大器。) |
| power amplifier | 功率放大器 | The concert venue requires a massive power amplifier. (這個音樂會場地需要一個大型的功率放大器。) |
| audio amplifier | 音訊放大器 | He built his own audio amplifier for the stereo system. (他為音響系統打造了自己的音訊放大器。) |
EN:In the sentence 'It was extremely cold,' the word 'extremely' functions as an intensifier.
翻譯:在「天氣極度寒冷」這個句子中，「極度」一詞的功能是強調詞。
當談論電子設備時使用 amplifier，而在討論語言中增強語意的詞彙時則使用 intensifier。
amplifier vs speaker
「amplifier」是擴大聲音電信號的電子設備；「speaker」則是將電信號轉換為實際聲音的揚聲器單體。
amplifier vs receiver
「amplifier」是單純的功率擴大機；「receiver」是整合了放大器、收音機及音訊切換功能的綜合擴大機。
amplifier vs preamplifier
「amplifier」通常指功率擴大機；「preamplifier」是前置放大器，負責初步放大和調節信號，再送至功率擴大機。
在對話中，當你轉述或總結別人的話時，可以用「amplifier」來指稱對方用來加強論點或情緒的詞語或概念。 EN: He kept saying "unbelievable" as an amplifier for his shock. 翻譯: 他一直用「難以置信」這個詞來加強他震驚的情緒。
EN:Her favorite amplifier in arguments is "absolutely crucial."
翻譯:她在爭論中最愛用的強調詞是「絕對關鍵」。
在日常對話中，人們有時會用「amplifier」來比喻任何能讓話語更有力、更引人注意的東西，不一定是電子設備。 EN: Don't just state your opinion; you need an amplifier to get their attention. 翻譯: 別只是陳述你的意見，你需要點「擴音器」來引起他們的注意。
EN:His enthusiasm is the best amplifier for that boring topic.
翻譯:他的熱情是那個無聊話題最好的「擴音器」。
在即興對話中，說話者可能會用「amplifier」作為一個臨時的比喻，來填補思考的停頓，或解釋自己為何要重複或強調某件事。 EN: It was just... you know, an amplifier for what I was trying to say. 翻譯: 那就像是... 你知道的，一個為我想說的話加分的東西。
EN:Let me add an amplifier here—this point cannot be overstated.
翻譯:讓我加個「擴音器」在這裡——這一點再怎麼強調都不為過。
正式寫作注意：在學術或正式商業文件中，應避免將「amplifier」用於上述比喻性的口語用法。請嚴格使用其技術性定義（電子訊號放大器）或明確的比喻（如「政策效果的放大器」），並確保上下文清晰，以免造成混淆。
power amplifier
noun + noun
功率放大器
guitar amplifier
noun + noun
吉他放大器
operational amplifier
adjective + noun
運算放大器
tube amplifier
noun + noun
真空管放大器
stereo amplifier
noun + noun
立體聲放大器
hook up an amplifier
verb phrase + noun
連接/安裝放大器
amplifier stage
noun + noun
放大級
drive an amplifier
verb + noun
驅動放大器
×He bought a amplifier for his guitar.
✓He bought an amplifier for his guitar.
The word 'amplifier' begins with a vowel sound (/æm/), so the indefinite article 'an' must be used, not 'a'.
×The store sells many amplifier.
✓The store sells many amplifiers.
'Amplifier' is a countable noun. When referring to more than one, the plural form 'amplifiers' must be used.
×The sound comes out of the amplifier.
✓The sound comes out of the speaker. / The amplifier powers the speaker.
An 'amplifier' is an electronic device that increases the power of an audio signal. The 'speaker' (or loudspeaker) is the component that converts the amplified electrical signal into audible sound. They are often separate components in a sound system.
×Open the amplifier to hear the music.
✓Turn on the amplifier to hear the music.
The correct verb for activating an electronic device like an amplifier is 'turn on' (or 'switch on'), not 'open'. 'Open' is used for physical containers or doors.
×amplifire, ampliphier, amplifiyer
✓amplifier
The correct spelling is 'amplifier'. Common misspellings include replacing the final '-ier' with '-ire', '-phier', or '-iyer'. Remember the root word 'amplify' + the agent suffix '-er' (a thing that amplifies).
×I need an amplifier for my phone. (when meaning portable speaker)
✓I need a portable speaker for my phone.
While technically correct, 'amplifier' is a specific, technical term for the component that increases signal power. In everyday conversation for common devices like a small Bluetooth speaker, the more general term 'speaker' or 'portable speaker' is more natural and accurate.