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. It has a clear, 90s-inspired retro look and was marketed to budget-conscious listeners who wanted a lightweight, functional wired set. The design carries forward from earlier Koss models, and the page names it as a direct descendant of the Koss Pro35. The cable has an inline microphone and remote for track and call control, so it works fine for mobile use. It came in color variants including Rhythm Beige and a transparent "Clear Retro Style" edition. The build is durable, the headband adjusts, and the whole thing is aimed at portability and casual listening.

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 is lightweight, with a D-profile design and 90s transparent styling. The cable is rugged and carries an inline microphone/remote combo. The headband adjusts to fit different head sizes. The earpieces sit on the ear, with no isolation and no noise cancelling.

Context

The KPH30i launched in 2017 as a modern take on Koss's long line of affordable, high-value headphones. It is a direct descendant of the Koss Pro35 and keeps the retro flair. It was sold under names like "Koss KPH30i Clear Retro Style On-Ear Headphones," and it targets people who want a wired, mobile-friendly set with some style.

Market

The KPH30i originally retailed for $30 and is still available at or near that price, 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 call it a "budget user's endgame" and a "winner" in its price class.