DALI iO-8 Wireless Headphones

DALI's Loudspeaker Heritage, Built Into a Wireless Headphone

The DALI iO-8 is a closed-back wireless headphone built around a 50mm free-edge paper-fiber driver, the same basic cone material DALI uses in many of its loudspeakers. Active Noise Cancellation, Bluetooth 5.2, and a USB-C digital input round out a genuinely flexible package.

Four ways to listen cover nearly every situation: Bluetooth for convenience, USB-C for a direct digital connection, active analog with the electronics powered on, and passive analog that works even with a fully dead battery.

A rechargeable battery delivers up to 35 hours of playback, or 30 hours with ANC engaged, and DALI built the iO-8 to run entirely from onboard buttons, so no companion app is required for everyday use.

Where the 50mm Driver Earns Its Keep

A Paper-Fiber Cone Borrowed From DALI's Speakers

Each earcup houses a 50mm driver with a free-edge paper-fiber cone, light and rigid enough to respond quickly to fast transients without breaking up under pressure, covering a specified 10Hz-43,000Hz frequency range.

The closed-back design blocks outside sound from reaching the driver and keeps your own music from leaking out to people nearby, a real practical benefit in an office or on a train.

Active Noise Cancellation, Tuned for Balance

Three ANC modes cover different situations: On for maximum quiet, Transparency when you need to hear your surroundings, and Off when you'd rather save battery, with Wind Noise Suppression improving outdoor listening and phone calls specifically.

Bluetooth 5.2 supports AAC, aptX, aptX HD, and aptX Adaptive codecs, while the USB-C input handles digital audio up to 24-bit/96kHz — DALI's own Hi-Res Audio Certification backs up that spec.

What Reviewers Are Saying

T3 called the iO-8 "proof that a brilliant pair of headphones doesn't rely on an exhaustive feature-set," adding that it "gets on with the important business in a deeply satisfying manner."

What Hi-Fi? praised "the finesse of their midrange and the way they render instrumental and vocal textures," with a top end offering "a blend of bite and refinement that's spot-on."

Who Is the DALI iO-8 Best For?

• You want ANC without losing DALI's natural balance: the system is tuned to quiet outside noise without reshaping the music's tonal character
• You want to listen four different ways: Bluetooth, USB-C digital, active analog, or fully passive analog that works with zero battery
• You want genuinely long battery life: up to 35 hours of playback, or 30 with ANC on, with a full charge in under two hours
• You want physical controls instead of an app: DALI built the iO-8 to run entirely from onboard buttons for everyday use
• You want DALI wireless you can wear all day — the iO-8's standard driver keeps the weight down

How Does It Connect to Your System?

Pair over Bluetooth 5.2 from a phone, tablet, or computer for wireless convenience, or connect the included USB-C cable to a computer or compatible source for a direct digital connection up to 24-bit/96kHz.

The included 3.5mm cable works two ways: plug in with the iO-8 powered on for active analog listening, or connect it to a headphone amplifier or airplane entertainment system in passive mode, which needs no battery at all.

Pairs Well With

What finishes the system around a DALI iO-8:

• Headphone amplifiers — for driving the iO-8 in passive mode from a home system
• Headphone cables — a spare or longer 3.5mm cable for passive analog listening
• Headphone stands — a proper resting spot between listening sessions
• Headphone accessories — replacement earpads keep the iO-8 fresh over years of use

Frequently Asked Questions

Does the iO-8 need battery power to work?

It doesn't. Passive analog mode works with a 3.5mm cable even when the battery is fully dead, making the iO-8 a true backup-free headphone.

Is there a companion app?

There isn't one required. DALI built the iO-8 around onboard physical buttons for volume, playback, calls, sound modes, and ANC.

Which Bluetooth codecs does it support?

AAC, aptX, aptX HD, and aptX Adaptive. Codec availability depends on your source device — aptX variants need a compatible Android device rather than an iPhone.

How long does a full charge take?

About one hour and fifty minutes for a full charge, delivering up to 35 hours of playback or 30 hours with ANC on.

Can I use the iO-8 with a home headphone amplifier?

Yes, in passive analog mode. Connect the 3.5mm cable to the amplifier and the iO-8 works like any other passive wired headphone.

Are the earpads replaceable?

Yes. DALI designed the earpads to be swapped out, extending the useful life of the headphones well past the first set wearing out.

See It in Action

THE ABSOLUTE SOUND presents Best Headphones Series: DALI I-08 wireless headphones.

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Learn More

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