Wave Line 3.5 mm Wired Earphones

Details

Wired earphones on an ordinary 3.5 mm plug, for laptops, older phones, in-flight entertainment, mixing desks, keyboards and everything else that kept its jack. There is no battery, no pairing, no firmware and no app, so there is nothing here that can stop working in a software update. Three things are wrong with how this aisle is specified. The first is driver size sold as quality: 10 mm, 13 mm, 14.2 mm, printed large on the box as though a diameter were a measurement of sound. A diameter tells you nothing without the impedance, the sensitivity and the response, and those three are what this page prints instead. The second is a frequency range with no coupler and no tolerance beside it, so 20 Hz to 20 kHz is claimed by every earphone ever made, including ones that are 12 dB down at 40 Hz. The third is the plug wiring: a four-pole plug is either CTIA or the older OMTP, the two swap the microphone and ground pins, and a mismatch means the microphone is silent on your phone while working perfectly on the shop demo unit. So the specification is the outcome, measured on a production unit.

• 10 mm dynamic driver, titanium-coated PET diaphragm on an N50 neodymium motor, one per side
• 32 ohm at 1 kHz, and 103 dB SPL per mW, which is 118 dB per volt. A normal loud listening level of 94 dB needs 0.08 mW, or 50 mV across 32 ohm, so every phone and laptop jack on the market drives these with headroom
• 20 Hz to 20 kHz measured on an IEC 60318-4 ear simulator, within plus or minus 3 dB of the target curve from 20 Hz to 8 kHz. The coupler is named because a response curve without one is not a measurement
• Total harmonic distortion under 0.5 percent at 94 dB SPL across 100 Hz to 10 kHz
• CTIA wiring, stated on the box. Microphone on the sleeve, ground on ring 2, which is what almost every phone made since 2013 expects
• Gold-plated brass four-pole plug, straight, on a 1.25 m braided nylon cable over four oxygen-free copper conductors of 0.08 sq mm each
• Moulded strain relief at the plug and at the Y-split, which are the two places a cable fails
• Three-button inline remote and a MEMS microphone at minus 42 dBV per pascal, 100 Hz to 8 kHz, working on every device without software
• Four silicone ear tip sizes plus one memory foam pair in the box. Spare sets Rs 190
• No battery, so nothing degrades, and 14 g on the cable
• The honest trade is isolation. These seal with a tip, not with a wall of plastic, so they attenuate about 18 dB above 1 kHz and almost nothing below 200 Hz. On a train you will hear the train
• A wired passive earphone is not a product BIS registers under the Compulsory Registration Scheme, so there is no CRS number to print here and we do not print one. What is tested is the acoustics and the restricted-substance content, and both reports are below
• There is no Shuunnya service-centre network. A warranty claim means sending the pair to us, and no turnaround time is published because none has been earned