有線與無線耳機：四款日常聆聽的實用選擇

引言

耳機市場大致分為兩大陣營：有線入耳式耳機與真無線耳機。兩者各有明顯優勢。有線機型可直接連接 USB-C 手機、電腦或平板，不必透過轉接線，線材上通常也附有麥克風與線控。真無線機型則擺脫線材束縛，具備主動降噪與便利的充電盒，但得仰賴 Bluetooth 與電池續航力。

本指南將檢視四款具體選項：Campfire Audio Axion、Apple AirPods Pro 2、Sennheiser IE300 與 Sennheiser Momentum True Wireless 4。每一款各自滿足了不同的優先需求，無論是通話清晰度、音樂聆聽、降噪，或單純想省去轉接線。

日常耳機該注意哪些重點

先從你打算如何使用耳機開始思考。如果通話很重要，麥克風與連接類型就和音質一樣關鍵。有線耳機的麥克風收音通常比真無線機型更清晰，也不會遇到 Bluetooth 斷線問題。反觀真無線機型更為便利，還經常搭載主動降噪，適合旅行或吵雜的通勤環境。

配戴貼合度是另一項關鍵因素。良好的耳道密合度同時決定了被動隔音效果與低頻表現。若密合度不佳，外界噪音會更明顯，低頻聽起來也會偏單薄。許多有線機型隨附多款泡棉與矽膠耳塞，但耳機殼的形狀以及有無繞耳設計，同樣會影響配戴的穩固感。

連接類型也很重要。USB-C 耳機可直接插入現代 Android 手機、配備 USB-C 的 iPhone、Mac 與 PC。部分機型內建 DAC 與耳機擴大機，因此不需要額外的轉接線。採 3.5mm 插頭的傳統有線耳機，在許多手機上可能仍需搭配轉接線。

Campfire Audio Axion：內建麥克風的 USB-C 有線選擇

Campfire Audio Axion 是一款有線入耳式耳機，採用透明塑膠耳殼。其子彈型造型與指腹凹槽設計，讓它比某些小耳殼款式更容易放入與取出。內部採用自家開發的全音域矽膠動圈單體。這顆單體置於類似平衡電樞的箱型腔體中，但本質上仍是動圈單體。

The Axion includes a cable with an inline microphone and a three-button remote for play, pause, volume up, and volume down. The play/pause button can also accept and end phone calls. Outdoors, call quality is clearer with the wired Axion than with the wireless AirPods Pro 2. The cable is also nicer than the one on the Sennheiser IE300.

線材另一端是 USB-C 端子，內含一顆兼具 DAC 與耳機擴大機功能的晶片，很可能還有一顆用於通話的 ADC。這讓 Axion 能直接連接 Android 手機、iPhone 15 或後續機型、Mac 或 PC，不需要轉接線。這顆 DAC 支援最高 384 kHz 的 PCM。Android 使用者不妨確認自己的播放 App 是否將音訊重新取樣為 48 kHz，不過 bit-perfect 播放對實際聽感的影響，遠不及硬體本身來得大。

在聲音方面，Axion 比 AirPods Pro 2 更能傳達音樂中的大動態變化。AirPods 的細節表現相近，但動態受到壓抑，而 Axion 則提供更飽滿的中頻與更寬廣的低頻。播放創作歌手類作品時，Campfire 聽起來溫暖而開闊，Apple 則清脆而乾瘦。整體而言 Axion 聽起來更自然，可能是因為它不依賴 DSP 來塑造單體的頻率響應。

與 Sennheiser IE300 相比，Axion 的低頻更厚實、更飽滿、更有分量，中頻也更豐潤。它對品質較差的錄音也更寬容，不過有時聽起來會略顯封閉。IE300 則介於 Campfire 的開闊暖調與 AirPods 的清脆乾瘦之間，可能更接近 Campfire。有些聆聽者或許會認為 Sennheiser 是更準確的選擇，而 Campfire 則更有音樂性。

Axion 當然也有取捨。它沒有繞耳設計，因此比 IE300 更難穩定配戴。要從隨附的泡棉與矽膠耳塞中找出合適的一款，可能需要多花點時間。良好的密合度對被動隔音與低頻表現至關重要，而 Axion 要確實密合，可能比一般情況更困難。它也沒有主動降噪，因此搭機使用時 AirPods Pro 2 仍是較佳選擇。

Apple AirPods Pro 2：強大的降噪與通話清晰度

The Apple AirPods Pro 2 are true wireless earphones with three main strengths. First, they offer good, if not great, sound quality with music. Second, their noise cancellation is outstanding, better than Sony’s and Sennheiser’s. Third, their phone call quality is the best available among all true wireless earphones tried. They are the only true wireless in-ear monitors that can be used for phone calls without frustrating the person on the other end with dropouts and voice clarity issues, especially outdoors.

The main downside is that an iPhone is needed to get the very best from them. Their handling of music is not terrible, but it is not as good as the Sennheiser Momentum True Wireless 4. Compared with the Campfire Audio Axion, the AirPods sound similarly detailed but dynamically restrained, like they are in a dynamic straight jacket. They do not deliver the same effortless, expansive low-end or the richer mid-range. With singer-songwriter material, they sound crisp and dry, and some listeners may find them papery. They also have a processed tinge compared with wired options.

For travel, the AirPods Pro 2 remain a strong choice because of their noise cancellation. They are also convenient for podcasts and casual listening. The trade-off is that music can sound less natural than the wired alternatives, and the best experience is tied to the Apple ecosystem.

Sennheiser IE300：沒有麥克風的有線好音質

The Sennheiser IE300 is a wired in-ear monitor with a small ear shell and over-ear cable routing. The over-ear loops help keep the earphones in place, which is an advantage over the Campfire Audio Axion. The IE300 does not have a microphone or remote, so it cannot handle phone calls. It also has no active noise cancellation.

On sound quality, the IE300 sits somewhere between the Campfire’s expansive warmth and the AirPods’ crispy dryness, probably closer to the Campfire. The Axion lends electronic music a thicker, fatter, chunkier low-end and sounds lusher in the mids than the IE300. The IE300 is less forgiving of lesser-quality recordings than the Axion, but some listeners may consider it the more accurate of the two.

The IE300’s cable is easily its worst feature. It tangles easily and is not as nice as the cable on the Axion. Still, the IE300 works well with a phone or device that has a headphone socket or a dongle. It is a music-first wired option for listeners who do not need calls or noise cancellation.

The IE300 can sound better than the Sennheiser Momentum True Wireless 4, even with the built-in headphone socket on a phone, which sounds about the same as an average dongle DAC. For listeners who prioritize sound quality over wireless convenience, the IE300 remains a relevant choice. It also avoids the battery and Bluetooth limitations of true wireless models.

Sennheiser Momentum True Wireless 4：搭配 Android 的無線音樂聆聽

The Sennheiser Momentum True Wireless 4 are true wireless earphones that sound best with an Android phone. They are positioned for music listening, and their music handling is better than the AirPods Pro 2. However, phone calls are not their strong point. They are best suited to listeners who mainly want wireless music and only occasionally need to take a call.

The Momentum True Wireless 4 offer the convenience of true wireless design without a cable. They do not match the wired Campfire Audio Axion or Sennheiser IE300 for call clarity, and they do not offer the same natural sound as the wired options. Still, for Android users who want a wireless music-first earphone, they are a logical option.

整體選購建議

The right choice depends on your priorities. If phone calls are important and you want to avoid dongles, the Campfire Audio Axion is a strong wired option with a USB-C connection, an inline microphone, and a warm, musical sound. It sells for the same money as the Sennheiser IE300 and AirPods Pro 2.

If noise cancellation and call clarity are your main concerns, the Apple AirPods Pro 2 are the better fit, especially for iPhone users. They are also the best option for in-flight use among these four. The trade-off is a more processed, dynamically restrained music presentation.

If music quality is the priority and you do not need calls, the Sennheiser IE300 offers a wired, music-first experience with a secure over-ear fit. Its cable is a weak point, but its sound sits between the warm Campfire and the crisp AirPods. For Android users who want true wireless convenience for music, the Sennheiser Momentum True Wireless 4 are the wireless music option, provided phone call quality is not a major requirement.

Wired earphones also provide lossless audio all the time and every time. Bluetooth earphones top out at CD quality lossless, and only when certain conditions are met, such as both the smartphone and the earphones supporting a specific lossless codec. True wireless in-ear monitors do not do high-res audio, and high-res audio has far less impact on what is heard than the hardware it feeds. The jump from lossy audio to CD-quality lossless is more important than the jump from lossless CD quality to high-res.

結語

There is no single best earphone for everyone. The Campfire Audio Axion suits listeners who want wired USB-C audio with a microphone and a warm, expansive sound. The Apple AirPods Pro 2 are the pick for noise cancellation and phone call clarity. The Sennheiser IE300 is for music-focused wired listening without calls. The Sennheiser Momentum True Wireless 4 are for Android users who want wireless music first. Matching the earphone to the way you actually listen is the most reliable way to feel confident about the purchase.