iFi iDSD Diablo 2 Portable DAC and Headphone Amplifier

Desktop Power You Can Carry

Most portable DACs make compromises to fit in a pocket. The iFi iDSD Diablo 2 refuses. This is iFi's flagship portable DAC and headphone amplifier, delivering up to 5,180mW from its balanced output, enough to drive full-size planar and high-impedance headphones that would embarrass most desktop amps, from a unit the size of a paperback book.

Inside, dual Burr-Brown DAC chips run in an interleaved configuration, handling PCM up to 32-bit/768kHz, DSD512, and full MQA decoding. Three gain modes, Normal (0dB), Turbo (+8dB), and Nitro (+16dB), scale the power to your headphones, while a built-in IEMatch circuit tames the output for sensitive in-ear monitors, so the same unit works with everything from IEMs to 600-ohm studio headphones.

A 4800mAh battery runs 6 to 12 hours depending on volume and gain mode, and the whole package weighs about a pound.

Lossless Bluetooth and a Look at the Future

The Diablo 2 is one of the first high-end DACs built around Bluetooth 5.4 with aptX Lossless, the codec that delivers true CD-quality audio wirelessly. It also supports aptX Adaptive, LDAC, HWA/LHDC, AAC, and SBC, covering every phone on the market. Stream from your phone in lossless quality, then plug in over USB-C when you want full hi-res playback.

It's also ready for what's next: dedicated bias, EQ, and amplifier circuits support xMEMS solid-state micro-speaker drivers, an emerging headphone technology, making the Diablo 2 unusually future-proof for a portable.

iFi includes the accessories others charge for: an iPower 2 power adapter, a desktop stand, a travel case, three digital cables, and multiple adapters.

What Reviewers Are Saying

Louis Gonzalez of Headfonics scored the Diablo 2 8.8 out of 10 in a January 27, 2024 review, calling it "certainly a step above the original Diablo when it comes down to sheer detail production and sonic performance in general" and "a complete, versatile, portable, and future-proof package." Mike Prager of Future Audiophile, in a May 26, 2025 review, wrote that it "impressed me immediately with its smooth, detailed, and effortless sound," noting he "could easily hear the individual instruments, as well as the blended result."

Who Is This DAC/Amp Best For?

• You own hard-to-drive headphones — over 5 watts of balanced output handles planars and 600-ohm loads that overwhelm typical portables.
• You want one unit for desk and travel — battery power, a desktop stand, and a travel case cover both jobs.
• You stream from your phone — Bluetooth 5.4 with aptX Lossless delivers true CD-quality audio without wires.
• You listen to everything from IEMs to full-size headphones — three gain modes plus IEMatch scale the power to match.
• If you only use sensitive IEMs near a desktop, the Diablo 2 is more power than you'll ever tap — a smaller DAC like iFi's ZEN series makes more sense.

How Does It Connect to Your System?

Wired sources connect over USB-C or coaxial/optical S/PDIF, and a balanced 4.4mm analog input lets it serve as a pure amplifier. Headphones plug into a balanced 4.4mm or single-ended 6.35mm output, and a balanced line output can feed an amplifier or powered speakers. For wireless listening, pair your phone or laptop over Bluetooth.

Charge it with the included iPower 2 adapter, or run it on battery anywhere. The included stand props it up on a desk, and the travel case protects it on the road.

Pairs Well With

Building your system? Here are some great companions for the Diablo 2:

• Headphones: Power like this deserves a reference headphone — see our Headphones.
• Cables: A quality 4.4mm or USB cable completes the chain — see our Interconnect Cables.
• Powered Speakers: The balanced line output can feed a desktop pair — see our Bookshelf Speakers.

Frequently Asked Questions

How powerful is it?

Up to 5,180mW into 32 ohms from the balanced output, and 2,450mW from the 6.35mm single-ended output, among the most powerful portables made.

How long does the battery last?

6 to 12 hours from its 4800mAh battery, depending on volume, gain mode, and headphone sensitivity.

Does it work with sensitive IEMs?

Yes. The built-in IEMatch circuit lowers the noise floor and output level for sensitive in-ear monitors.

What formats does it support?

PCM up to 32-bit/768kHz, DSD512, and full MQA decoding, plus Bluetooth codecs including aptX Lossless and LDAC.

What's in the box?

An iPower 2 adapter, desktop stand, travel case, three digital cables, and multiple adapters.

What's the warranty?

iFi covers the Diablo 2 with a 1-year manufacturer's warranty.

See It in Action

SoundStage! Network puts this "endgame" amp-DAC through its paces:

Andy's Tech Tone covers its wireless side and everyday use:

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Learn More

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