Koss UR 23i vs. Trust Zena

Headphones Comparison, Reviews and Tests

Side by side comparison and review of Koss UR 23i and Trust Zena. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.

Headphones Specifications Comparison

Koss UR 23i vs. Trust Zena Comparison Chart
DESIGN AND DIMENSIONS Koss UR 23i Trust Zena
Product Type Headphones - wired - 3.5 mm jack Headphones - Bluetooth - wireless, wired - 3.5 mm jack
Height - 19.5 cm
Width - 17.5 cm
Depth - 7.3 cm
Weight - 186 g
Dimensions & Weight Details - Headphone body: 166 g
Colour White | Black -
Earpad Material - Synthetic leather
Recommended Use Portable electronics Portable electronics
Bluetooth Range (Operating Distance) - 10 m
SOUND QUALITY Koss UR 23i Trust Zena
Headphones Form Factor Full size On-ear
Ear Cups Type - Closed
Adjustable Headband - Yes
Foldable - Yes Trust Zena can be folded.
Connectivity Technology Wired Wireless, wired
Wireless Technology - Bluetooth
Bluetooth Version - Bluetooth 5.0
Bluetooth Profiles - Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP)
Bluetooth Audio Codec - SBC
Sound Output Mode Stereo Stereo
Frequency Response 20 - 20000 Hz 20 - 20000 Hz Both headphones offer the same frequency response.
Total Harmonic Distortion (THD) - 1%
Sensitivity 94 dB -
Impedance 34 Ohm 32 Ohm
Max Sound Pressure - 100 dB
Diaphragm - 40 mm
Magnet Material - Neodymium
MICROPHONE Koss UR 23i Trust Zena
Form Factor - Built-in
Type On-cable -
Microphone Technology - Electret condenser
Microphone Operation Mode - Omni-directional
Frequency Response - 150 - 4000 Hz
Microphone Features - Echo-cancelling
REMOTE CONTROL Koss UR 23i Trust Zena
Controls - Volume, play/pause, next/previous track, voice assistant
CABLE Koss UR 23i Trust Zena
Cable Type Headphones cable - 1.22 m Micro-USB charge cable - detachable
Audio cable - detachable
BATTERY AND CHARGING Koss UR 23i Trust Zena
Battery Type - Headphone battery rechargeable - lithium polymer
Battery Life - 75 hour(s)
Charging Time - 3 hour(s)
CONNECTIONS Koss UR 23i Trust Zena
Connector Type Headphones (mini-phone stereo 3.5 mm 4-pole) Headphones (mini-phone stereo 3.5 mm 4-pole)
OTHERS Koss UR 23i Trust Zena
Service & Support Limited warranty - lifetime Limited warranty - 2 years
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