We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return
Policy
qualify for our 30-Day Hassle-Free Returns. Please see the section above for more details.
Replacement Only Return Policy
Replacement within 30 days of the delivery date.
Manufacturer Only Return Policy
Covered by the manufacturer's warranty.
Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer.
Holiday Extended Return Policies
Extended Holiday Return Policy.
Qualifying purchases of products displaying the " Extended Holiday
Return Policy ",
from November 1st, 2023 to December 25, 2023, are eligible for a Refund or Replacement until January 31,
2024.
Extended Holiday Replacement-Only Return Policy
Qualifying purchases of products displaying the " Extended Holiday
Replacement-Only Return Policy ",
from November 1st, 2023 to December 25, 2023, are eligible for a Replacement until January 31, 2024.
Sleek White Design Meets Open-Air Comfort
The Koss KSC21 earphones showcase a minimalist white design that perfectly balances style and functionality. The unique over-ear clip mechanism features pivoting ear plates that adapt to your ear shape, while the open-air design keeps you aware of your surroundings without compromising sound quality. The foam ear cushions and lightweight construction work together to provide hours of comfortable listening.
Engineered for clarity across a wide frequency range of 50 Hz to 18 kHz, these earphones deliver crisp highs and balanced mids while maintaining connection to your environment. The 4-foot cable and standard 3.5mm connector ensure compatibility with your favorite devices, making these ideal for both active lifestyles and daily commutes.
Technical Specifications
🎧 50 Hz - 18 kHz frequency response for balanced sound
📏 4-foot cable length for freedom of movement
⚡ 36 Ohm impedance for efficient device compatibility
Applications
🏃♀️ Perfect for outdoor running with ambient awareness
🚶♂️ Comfortable daily commute companion
🎮 Extended gaming sessions with environmental awareness
Questions fréquemment posées
The Koss KSC21 earphones feature a lightweight, over-the-ear design with pivoting ear plates for enhanced comfort. They offer stereo sound with a frequency response range of 50 Hz to 18 kHz, and include soft foam ear cushions for an open, hear-through sound experience. The earphones come with a 4-foot cable and 3.5mm connector, making them compatible with most audio devices. They're designed as binaural supra-aural headphones and include Koss's lifetime warranty.
The Koss KSC21 earphones have a frequency response range of 50 Hz to 18 kHz, providing clear audio reproduction across both low and high frequencies. This range is suitable for most everyday listening applications, delivering balanced sound quality for music, podcasts, and other audio content.
The Koss KSC21 earphones come with a lifetime limited warranty, demonstrating Koss's commitment to product quality and customer satisfaction. This warranty provides long-term protection for your investment and ensures peace of mind with your purchase.
The Koss KSC21 uses a standard 3.5mm mini-phone connector, making it compatible with a wide range of devices including smartphones, tablets, laptops, and portable music players. The cable length is 4 feet, providing ample reach for comfortable use.
The Koss KSC21 earphones have an impedance of 36 Ohms, which is ideal for use with portable devices and provides efficient power handling. This impedance level ensures good sound quality while maintaining compatibility with most consumer audio devices.
The Koss KSC21 features a binaural, over-the-ear design with pivoting ear plates for optimal fit and comfort. The supra-aural form factor means they rest on the ears rather than completely enclosing them, while the lightweight construction and soft foam ear cushions ensure comfortable extended wear.
The Koss KSC21 is designed for everyday use thanks to its lightweight construction, comfortable over-the-ear design, and hear-through sound capability that keeps you aware of your surroundings. The 4-foot cable provides good mobility, while the pivoting ear plates ensure a secure fit during various activities. The lifetime warranty also makes it a reliable choice for daily use.
The Koss KSC21 comes as a complete earphone set featuring the binaural earphones with attached 4-foot cable and 3.5mm connector, soft foam ear cushions, and documentation including warranty information. The white color design offers a clean, modern aesthetic suitable for various settings.
