Dali IO-4 Wireless Headphones


The New DALI IO range of headphones are a result of a two year project to design, develop and build a headphone that would match their award winning speakers using the same paper fibre drivers which give a natural transparent sound. They have been created to the highest possible standard in terms of design, durability, comfort, functionality and of course sound quality. They incorporate a custom 50 mm paper fibre driver, ear pads that are made from memory foam and they are covered in soft synthetic leather for maximum comfort.

The DALI IO4 headphones have an incredible 60 hour battery life. the DALI IO4 supports Bluetooth AptX, AptX HD and Apple AAC. Also supplied is a USB and a mini-jack lead for more traditional connectivity.


Product series IO
Headphone Principle Closed back circumaural (over ear)
Full Range Driver 50 mm free edge paper fibre cone
Frequency Range (+/-3 dB) [Hz] 10 - 20,000
Maximum SPL [dB] 100
Connection Input Bluetooth™ 5.0
3.5 mm Mini Jack
Wireless Input(s) Bluetooth 5.0, AAC, aptX, aptX HD
Magnetic Shielding No
Functions Power ON/OFF
Bluetooth™ Pair/Release
Volume up/down
Play/Pause/Skip track
Take call
Noise Reduction N/A
Hands-free Calls & Voice Assist Clear Voice Communication (CVC)
Battery Playback Time Up to 60 hours
Battery Charge Time 2 hours
Accessories Included USB-C cable
3.5 mm stereo cable
String bag
Replaceable Earpads Yes
Weight [kg] 320 g
Compact Storage One-way foldable
IP Rating IP53
Analogue Input Sensitivity [mV] 200 mV rms / 175 mV rms
Input Impedance 3.5mm Mini-jack [Ω] 25


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