Description
The Koss PLUG takes a different approach to earbuds. Instead of a loose fit, it uses a dynamic driver mounted just outside the ear, connected to a small tube that inserts into the ear canal via a soft, hydrophilic urethane cushion. That cushion expands to match the shape of your ear canal, creating a snug seal each time you put them in.
That seal is the point: it blocks ambient noise the way pricier closed-back headphones do, while also tightening up bass response and keeping the treble clear. Rated at 10-20,000 Hz frequency response, 16 ohms impedance, 112 dB SPL/1mW sensitivity, and under 0.3% distortion, the PLUG delivers Koss’s signature sound in a package small enough to carry anywhere.
- Dynamic driver with tubular port design for in-canal fit
- Expandable hydrophilic urethane cushions for a custom seal
- Frequency response: 10-20,000 Hz
- Impedance: 16 ohms
- Sensitivity: 112 dB SPL/1mW
- Distortion: less than 0.3%
- Straight, dual-entry 4ft cord
- Includes four extra ear cushions
- Backed by Koss’ Limited Lifetime Warranty
Whether you’re pairing them with a portable player or a phone, the PLUG is built for listeners who want isolation and detail without bulky over-ear headphones.
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