With DALI's 35+ years of experience in creating high quality loudspeakers, we decided to use our passion and expertise to create the wireless DALI IO-4 - dedicated to today’s music lovers.

With our passion for music reproduction, we were convinced that we could do with headphones what we have done with speakers; provide a better sounding product that delivers music experiences superior to the established competition.

Headphones are essentially a pair of small loudspeakers mounted on your head. They are your personal set of portable hi-fi speakers that enable you to take that authentic DALI sound with you wherever you go.

The DALI IO-4's are intended to be the perfect travel companion for those ‘on the go’ situations.


Dali IO-4


    Product series Headphones
    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
    Nominal Impedance [ohms] 25
    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 2.5 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