Koss UR18 vs pTron Boom Ultima 4D – Specs, Price & Comparison (2026)

- Leatherette ear cushions form seal around ears to enhance bass frequencies - Headband accommodates all head shapes and sizes for maximum comfort - Includes straight, dual-entry 8 foot cord with 3.5 mm (1/8-inch) plug - Folds into compact configuration, convenient for storage and portability - Covered under the Koss Stereo phones Limited Lifetime Warranty

pTron Boom Ultima 4D Deep Bass Stereo Earphones Dual Driver Sports Headset with Mic for All Smartphones. pTron Boom Ultima in-ear headphones are widely compatible with all 3.5mm audio jack smartphones, tablets, MP3/MP4 Players, Laptop/Desktop Computers, and other audio devices. Listen to your music for longer with a comfortable, secure fit that wonâ€™t fall off; experience an in-ear soft silicone ear cap design that adjusts to your ear for maximum comfort. These high bass earphones with a microphone come with gold-plated audio jack and 1.2m tangle-free cable, covered by strong material of TPE, provides the slim and soft-touch feeling. Enjoy an evenly balanced sound thatâ€™ll boost your tunes while keeping them clear; benefit from the extended bass response and saturated midrange settings for crisp, yet powerful audio. Built-in smart in-line controller and high-quality microphone, you can freely operate remote controls for music play/ pause, next track/previous track, phone calls answering/rejecting/ hanging up. pTron Boom Ultima (Boom 3) earphones Dual drivers enhance your music with high-fidelity audio for better sound than ever, achieve the kind of audio clarity mono-driver headphones simply cannot provide.

Key Differences

The frequency response differs (25 Hz - 15000 Hz vs 20Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (32 Ohms vs 32â„¦ ±15% Ohms), which can affect compatibility and audio output when used with different devices. Koss UR18 and pTron Boom Ultima 4D are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Koss UR18 and pTron Boom Ultima 4D offer different noise cancellation capabilities (NA vs Passive Noise Cancelling), which can impact how effectively they block external noise. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The driver size differs between the two (NA vs 4 X 8 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (NA vs 20 GM), which may affect comfort during extended use.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.

Top Differences

Noise Cancelling: NA vs Passive Noise Cancelling
Driver Size: NA vs 4 X 8 mm
Weight: NA vs 20 GM
Impedance: 32 Ohms vs 32â„¦ ±15% Ohms

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Key Differences

Top Differences