Shokz OpenFit 评测--音质出色的轻型真无线耳机
Shokz OpenFit 是为数不多的采用开放式设计、无需插入耳道的真正的无线耳机（TWS）。因此，它们在同类产品中占据了一席之地，同时仍希望成为运动的理想之选，提供舒适的佩戴体验和出色的音质。
在这次测试中，我们将看到 Shokz（前身为 AfterShokz）能否实现其承诺。
规格
| 佩戴方式 | 耳挂式、开耳式 |
| 连接性 | 蓝牙 5.2，双连接 |
| 范围 | ~ 33 英尺 |
| 扬声器 | 空气传导换能器，50 - 16,000 Hz，96 dB ± 2.5 dB |
| 音频编解码器 | SBC、AAC |
| 电池容量 | 58 mAh（耳机），600 mAh（充电盒） |
| 充电端口 | USB-C |
| 无线充电 | 无 |
| 重量 | 0.30 盎司（耳机），2 盎司（充电盒） |
| 固件版本 | V_20 |
| 交付内容 | 耳机、充电盒、充电线（USB-A 转 USB-C）、文档 |
| 价格（建议零售价） | ~180 美元 |
外壳和人体工学设计 - Shokz OpenFit 几乎看不出来
Shokz OpenFit 每个耳塞重 0.30 盎司，相对较重。相比之下 华为 FreeBuds 5仅重 0.19 盎司。最大的不同在于 Shokz TWS 无需插入耳道或夹在耳廓中，而是使用耳钩，因此轻如羽毛。佩戴舒适度极佳，经常需要我们检查耳机是否佩戴到位。即使在激烈的体力活动或运动中，耳机也能牢牢固定在原位。
OpenFit 耳机由塑料和硅胶制成，手感舒适。精致的制作确保了稳定性，没有任何令人不愉快的棱角。而充电保护套则比较笨重，磨砂塑料很容易留下指纹。
Shokz OpenFit 耳机通过了 IP54 保护认证，可以防止灰尘和水从四面八方溅入，但充电盒却没有这项认证。
功能和操作 - Shokz-TWS 没有 ANC
Shokz OpenFit 专注于基本功能，既不提供主动降噪（ANC）功能，也不提供穿耳功能。后者并非必要，因为这款耳机始终能够提供良好的环境感知，而不是被动地屏蔽耳朵。
Shokz 提到的多点配对涉及双蓝牙，可同时连接两台设备。根据需要，耳机会在它们之间自动切换，也可以通过应用程序进行手动切换。遗憾的是，配对列表只能包括这两个设备。
相应的应用程序可在 Google Play、Apple App Store、三星的Galaxy Store 和华为 AppGallery 上下载。可以下载固件更新，还可以根据需要定义均衡器。
耳机上的按键通过隐蔽的硅胶乳头触摸，反应可靠，主要负责媒体播放。它们还可用于接听或结束通话，以及启动智能手机上预定义的语音助手。
音效 - 强劲的中音和真实的低音
初次佩戴 Shokz OpenFit 时，我们对其丰富的音质和宽广的舞台感到惊喜，因为我们没有预料到在这一特定领域会有这样的功能。根据粉红噪声测量，即使是较低的中频和低频也清晰可闻。在极高频率方面，Shokz 耳机的功率只是略有下降。不过，无论是播放音乐还是电影，OpenFit 都能产生出色的效果。
每个耳塞中还嵌入了麦克风，可以在安静的环境中实现合理的通话体验。不过，在测试中，它们表现出易受风的影响，即使在中等强度的自行车骑行中，也无法拨打电话。
| Loudspeakers | |
| THD | |
| Shokz OpenFit (RMS: -1.5 dBFS) | |
| Jabra Elite 5 (RMS: -2.9 dBFS) | |
| Huawei FreeBuds 5 (RMS: -2.8 dBFS) | |
| THD+N | |
| Shokz OpenFit (RMS: -1.5 dBFS) | |
| Jabra Elite 5 (RMS: -2.9 dBFS) | |
| Huawei FreeBuds 5 (RMS: -2.8 dBFS) | |
* ... smaller is better
THD（总谐波失真）：谐波失真量化了非线性成分（谐波含量）相对于原始信号所造成的失真。THD 特指基波成分。值得注意的是，虽然 "失真系数 "一词经常被交替使用，但它实际上指的是整个信号，而不仅仅是基波分量。
THD+N（总谐波失真 + 噪音）：该值与总谐波失真相当，但除了测量谐波的干扰功率外，它还将噪音的影响作为一个有效值考虑在内。 测量时，通过被测耳机回放一个低谐波正弦信号（通常为 1 kHz 且 > 0 dB）。然后用一个线性测量麦克风（测量距离约为 0.40 英寸）记录该信号。
总谐波失真（THD）和总谐波失真+N 值均以百分比表示，数值越低，信号的保真度越高。
Shokz OpenFit audio analysis
(+) | speakers can play relatively loud (90.8 dB)
Bass 100 - 315 Hz
(+) | good bass - only 4.8% away from median
(+) | bass is linear (2.9% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.7% away from median
(+) | mids are linear (1.6% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.5% higher than median
(+) | highs are linear (6.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (9.6% difference to median)
Compared to same class
» 3% of all tested devices in this class were better, 1% similar, 96% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Compared to all devices tested
» 3% of all tested devices were better, 1% similar, 96% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Huawei FreeBuds 5 audio analysis
(+) | speakers can play relatively loud (87 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 8.4% lower than median
(+) | bass is linear (2.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 5.7% lower than median
(+) | mids are linear (5.3% delta to prev. frequency)
Highs 2 - 16 kHz
(-) | very high highs - on average 15.4% higher than median
(+) | highs are linear (4.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (20.4% difference to median)
Compared to same class
» 50% of all tested devices in this class were better, 8% similar, 42% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Compared to all devices tested
» 50% of all tested devices were better, 8% similar, 42% worse
» The best had a delta of 4%, average was 25%, worst was 134%
电池寿命 - 一次充电超过 7 小时
Shokz OpenFit 的电池容量相当大，每个耳塞为 58 毫安时，但当然也得益于在运行时间测试中没有配备 ANC。因此，它们超过了带有 ANC 功能的竞争产品。
充电盒的容量为 600 毫安时，理论上可提供五次以上的额外充电，但 Shokz 只提到了四次。通过 USB-C 接口，充电盒可在两小时内充满电；不支持无线充电。单个耳机在外壳内可在一小时内充满电，但五分钟的充电时间应足以支持一小时的媒体播放。
| Battery Runtime - Spotify loop at 65dB/A (incl ANC) | |
| Shokz OpenFit | |
| Jabra Elite 5 | |
| Huawei FreeBuds 5 | |
评语 - Shokz 的 TWS 首秀表现出色
在测试过程中，Shokz OpenFit 表现出色，佩戴舒适，电池续航时间长，声音浑厚。少见的开放式耳罩设计与耳钩相结合，保证了在剧烈运动时的稳固佩戴，最大限度地减少了耳罩滑落的担忧。
虽然 Shokz OpenFit 具有出色的音质、较长的电池寿命和佩戴舒适度，但也存在一些技术缺陷。
虽然耳机的 IP54 防护等级在防尘防水方面令人印象深刻，但它并非完全防水。明显的缺点包括充电盒无法启用无线充电，以及没有主动降噪功能。值得肯定的是，双连接功能有所帮助；不过，配对列表仅限于两台设备也是一个缺点。测试过程中发现，麦克风极易受到风的干扰。
如果您喜欢出色的音质和安全的佩戴，Shokz OpenFit 是一个不错的选择。经常打电话或喜欢主动降噪（ANC）的人应该仔细看看FreeBuds 5 。如果钱是个问题，Sennheiser CX True Wireless 或Galaxy Buds2 Pro是更实惠的入耳式选择。
价格和供应情况
Shokz OpenFit 可直接从公司网站购买。但亚马逊和数码港的价格更低。
Transparency
The selection of devices to be reviewed is made by our editorial team. The test sample was given to the author by the manufacturer free of charge for the purposes of review. There was no third-party influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. We never accept compensation or payment in return for our reviews. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.
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