大鈍的部落格

KOSS ProtaPro

Koss Porta Pro個人擁有時間有十數寒暑,

亦是個人脫離Walkman附贈小耳塞時代後第一隻叫得出名號的耳機，當年美製品一枚千八塊大洋，在外出寄人籬下的歲月中低調的陪我磨過一張張CD。,

如今萬物皆漲價，它網路價NTD:1,350.-(2008年)，有"俗"貨可歛,也算是個小小的幸福。

基本上很華麗活潑的聲音，低頻豐滿且接續順暢，但稱不上是細緻，雖好推不”大食”，但也能分辨前端之差異。

不似一些耳塞設計用共振管加強低頻，但有一明顯”段落”感。AA等耳機論壇有諸多評價就不再多述。

美製與MIC差異的確不大,僅可說Run in之差。品質維持算是穩定。

耳機"季化"(aging)後,高頻會"順"一些,調調"發音體"角度與距離(Comfort Zone調整還真好用)，不會夾耳，亦可稍"平衡"低頻，不會太刺激。

一直用它主要是因它通風良好，也適合眼鏡族。

推薦PortaPro 的好友：

1.液態快乾膠 (不要"膠"狀的，AB膠也不好施工)：

小心地"流"進不鏽鋼帶與黑色塑膠那"2266"的隙縫中,稍稍搖動使其填滿既可,硬化後"一體同心"可減少一些不必要的雜音。

2. 塑膠髮圈：

如果不常摺疊帶出門，不躺在床上聽，有長時間低頭使用需求(ex.K書啦)，PortaPro雖舒服還是偶會溜下來，試過眼鏡帶，鬆緊帶，還是硬式塑膠髮圈稍加工後加上兩條橡皮筋固定最好用，調的好配戴感像戴頂輕鬆的帽子。

男生記得不要弄的太”娘”（Kuso例外），女生可自由發揮。(女生有人會選用PortaPro?)

側墊日久磨損後黑色泡綿可以找PU保溫材料(黑色)或NBR泡綿(象牙色，藥妝店有當粉撲賣)剪出需要大小替換。

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產品規格：

頻率響應：15Hz~25kHz

失真率：<0.2%

阻抗：60歐姆

效率：101dB SPL/1mW

線長：4英尺

耳機接頭：3.5mm/6.4mm

產品特色 / 說明：

頭戴式的耳機，專利的Comfort Zone設計，可以讓使用者調整貼耳時的鬆緊度，讓你輕鬆使用。

Koss PortaPro Stereophone

High Quality Sound Sets Performance Standard for Portable Listening

First introduced in 1984, this high quality portable stereophone set performance and comfort standards for personal listening worldwide. Over the years, much to the delight of devout Porta Pro enthusiasts, we’ve preserved the original design and performance that made the Porta Pro a portable music icon. Today the Porta Pro remains the headphone of choice for the discriminating listener. Designed for those with refined musical acuity, the Porta Pro continues to be the most requested headphone at koss.com.

The Porta Pro features dynamic elements that deliver exceptionally rich, deep bass and a remarkably wide frequency response from 15-25,000 Hz to capture every nuance in your favorite movie or musical performance. Constructed from mylar, the elements are extremely rigid, minimizing mechanical distortion and ensuring exceedingly accurate sound reproduction. Neodymium iron boron rare earth magnet structures enable the Porta Pro to deliver greater volume so you can hear every note, even when competing against the sounds of a commuter train with a low-voltage MP3 or disc player. Oxygen free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Foam earcushions provide an open, hear-through sound that lets you keep in touch with your surroundings perfect to wear while running, at work, or while traveling.

Whether you’re listening at home or on the go, the Porta Pro will bring the excitement of a live performance to any recording.

The PortaPro by Koss is covered by Koss' No*Questions*Asked Lifetime Warranty.