Koss KPH30i (2017)

On-ear wired headphones launched in 2017 as a modern retro-styled model with dynamic drivers and inline microphone

Overview

The Koss KPH30i is an on-ear headphone introduced in 2017, designed with a clear, 90s-inspired retro aesthetic and marketed toward budget-conscious listeners seeking a lightweight, functional wired set. It carries forward design language from earlier Koss models, specifically noted as a direct descendant of the Koss Pro35. The unIt features a cable with an inline microphone and remote for track and call control, making it suitable for mobile use. Available in color variants including Rhythm Beige and a transparent "Clear Retro Style" edition, the KPH30i emphasizes portability and casual listening with a durable build and adjustable headband.

Specifications

Production Year	2017
Frequency Response	15 - 25,000 Hz
Impedance	60 Ohms
Sensitivity	101 dB SPL
Driver Type	Dynamic drivers
Cable Length	4 foot
Microphone	Inline mic with remote (Pause/Play/Skip, Answer/End)
Noise Cancellation	No noise cancellation
Headband	Adjustable headband with patent-pending design
Product Type	On Ear

Design

The KPH30i features a lightweight construction with a D-profile design and 90s transparent styling, offering a nostalgic visual appeal. It includes a rugged cable system and an inline microphone/remote combo. The adjustable headband is designed for comfort across head sizes, and the earpieces are built for on-ear placement without isolation or noise-cancelling features.

Context

The KPH30i was launched in 2017 as a modern homage to Koss's legacy of affordable, high-value headphones. Positioned as a direct descendant of the Koss Pro35, it continues the brand’s tradition of accessible audio gear with retro flair. Marketed under names like "Koss KPH30i Clear Retro Style On-Ear Headphones," it targets users who value style and function in a wired, mobile-friendly package.

Market

The KPH30i originally retailed for $30 and remains available at or near that price point, often discounted further. It is described as an affordable, decent-sounding option for casual listening, with praise for its warm sound signature, solid bass, and clear highs. Some users highlight it as a "budget user's endgame" and a "winner" in its price class.