ATH-CKS90i - Earphones Audio-Technica - Free user manual and instructions

Product Type	In-ear earphones
Model	ATH-CKS90i
Brand	Audio-Technica
Driver Unit	13.5 mm
Frequency Response	5 Hz – 25 kHz
Impedance	16 ohms
Maximum Input Power	200 mW
Sound Pressure Level	105 dB
Plug	3.5 mm L-shaped stereo mini-plug
Cable Length	1.2 m (Y-type)
Weight	Approx. 9 g (without cable)
Accessories Included	Eartips (S, M, L), carrying case
Features	High-fidelity sound, deep bass, noise isolation
Care	Clean eartips with damp cloth; avoid moisture
Safety	Do not use at high volume for extended periods
Spare Parts	Eartips available separately
General Info	Compatible with standard audio devices with 3.5mm jack

Frequently Asked Questions - ATH-CKS90i Audio-Technica

How do I choose the right eartip size?

Start with the medium size. Try each size to get a secure fit and good sound isolation. The largest size that fits comfortably is usually best.

Can I use the ATH-CKS90i with an iPhone?

Yes, the 3.5mm plug works with most devices including iPhones (with adapter for newer models). The earphones are designed for universal compatibility.

How do I clean the earphones?

Remove the eartips and wash them with mild soap and water. Wipe the earphone body with a dry cloth. Avoid getting moisture into the nozzle.

Why is the sound coming from only one side?

Check the connection at the source and plug. Inspect the cable for damage. If using with a splitter or adapter, test without it. Debris in the eartip can also block sound.

What is the warranty period?

Audio-Technica typically offers a 2-year limited warranty for earphones. Keep your receipt and register online if possible.

Are these earphones noise-canceling?

No, they are noise-isolating by design. The eartips create a seal that passively blocks outside noise. They do not have active noise cancellation.

Can I replace the cable?

The cable is fixed and not user-replaceable. If damaged, the earphones would need repair or replacement.

How do I store the earphones?

Use the included carrying case to avoid tangling and protect from dust. Coil the cable loosely.

What is the recommended burn-in time?

Burn-in is optional. Playing music at moderate volume for 50-100 hours can stabilize the driver performance, but it's not necessary.

How can I improve bass response?

Ensure a good seal with proper eartip size. Use a deep insertion technique (without discomfort). The earphones are already tuned for solid bass.

USER MANUAL ATH-CKS90i Audio-Technica

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