With the F9 PRO, you can easily get lost within your music for hours without fatigue. We conduct dozens of stringent quality tests, thousands of times, so that you may cast your worries away and your fears are allayed.

2019年1月6日 · 飞傲（FiiO）F9 PRO 三单元圈铁耳机外观识别度非常高，佩戴起还是比较舒服的不会挤压到耳朵，耳机搭配一圈铁+两动铁楼氏KNOWLES的30017单元特别适合听一些流行音乐，另外就是在价位上要比国产其他耳机厂商贵上一点，最好是在有活动的时候下手购买是个不错的 …

The Fiio F9 Pro has the upper hand for bass quality and speed, which sounds more mature and with additional extension, compared to the energetic presentation of the Tequila1. The Fiio F9 Pro has also the smoother bass texture then Tequila1.

2017年底，Fiio推出了兩款新耳機，一支是較平價的FH1，另一支則是這次評測的F9 PRO。 作為F9的升級款，與F9不同處主要是在動圈單體上進做了改進，而動鐵單元則是採用婁氏Knowles行之有年的TWFK-30017－這顆單體應該是婁氏最知名的一顆了。

2017年11月17日 · Buy FiiO F9 PRO Best Over The Ear Headphones/Earphones/Earbuds Detachable Cable Design Triple Driver Hybrid (1 Dynamic + 2 Knowles BA) in-Ear Monitors with Android Compatible Mic and Remote (Titanium) ...: Earbud Headphones - Amazon.com FREE DELIVERY possible on eligible purchases

FiiO F9Pro sports much higher quality BA drivers for the midrange and for the treble, resulting in a more detailed sound. No burn-in is recommended by FiiO, but a little over 50 hours has been applied before taking the impressions of FiiO F9Pro.

2017年12月16日 · 线材分线器上，f9 pro印的是“pro”，而f9印的是“fiio”。 插头方面，F9 PRO改成了发烧友们更喜欢的弯插，在耐用度方面进一步提高。 F9 PRO依然是标配两条线材，一条2.5mm平衡插头线，一条是带三键麦克风线控3.5mm单端线材。

2018年1月4日 · The F9 Pro works well from my HTC M9 or I-phone 7 without an external amplifier, but I did find it scaled well and was particularly enjoyable using the Cayin N3 and a resistor modded Walnut F1 (18K Ohm in parallel with Muses op-amp to lower gain). I think the F9 Pro also is easier to pair than the original F9 due to a slightly warmer tone.

2018年2月7日 · The FiiO F9 Pro presents a very clear sound like the standard version, but this time with more control and cohesiveness on the whole spectrum. I personally would skip the F9 and pay extra for the F9 Pro without hesitation, just for that reason.