Forget Everything
you know about headphones

Mo-Fi is the first headphone that delivers real audiophile performance and sound quality on every device—from professional studio gear to laptops, tablets and even your phone. Oh, and we completely reimagined how it fits on your head, so you’ll get both optimal sound and listen-all-day comfort. Because trust us, you’ll want to.

This is Mo-Fi

Let The Power Go To Your Head

Built-in Amp + Premium Drivers

Mo-Fi is the first headphone that combines a built-in audiophile amplifier and insanely great-sounding drivers for a truly mind-blowing listening experience. Sure, this means Mo-Fi can get loud. But more importantly, it allows for the most accurate sound reproduction—so you’ll always enjoy great-sounding audio, on every device. Frankly, it’s surprising no one ever thought of this before—but hey, we’re Blue. Innovation is what we do best.


Built-in Audiophile Amp


For decades, the only way to get a high-fidelity headphone experience was to use passive audiophile headphones tethered to a bulky outboard amplifier. Mo-Fi changes all of that. To create the Mo-Fi amp we collaborated with FiiO, designer of award-winning headphone amps. This alliance yielded the world’s first audiophile headphone amp built right into a set of headphones, matched to our custom ultra-premium drivers. The result is that Mo-Fi’s amp dwarfs the typical headphone output of a mobile device or laptop in every way, reducing the audio workload on your devices so you can enjoy crystal-clear audio.

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Audiophile Drivers


Thanks to Mo-Fi’s built-in amplifier, we were able to utilize extremely high-quality drivers that reproduce sound accurately and dynamically when combined with lots of power. These custom-designed 50mm dynamic drivers are some of the largest on the market (yeah, size does matter). We designed Mo-Fi’s drivers to be the best balance between efficiency and accuracy when matched to the built-in amp. Unlike other headphones that rely solely on the teeny amplifier built into your phone or computer, Mo-Fi’s drivers and amplifier are custom-matched to each other so they always reproduce audio with the greatest accuracy and dynamic response.

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    every device
    sound better

    Wouldn't it be amazing to get high-fidelity audio on any device?

    Impossible, you say? Well listen to this: Mo-Fi improves the sound of every source—from smartphones to studio gear—by reducing the audio workload on your device. The built-in amp provides tons of power so your source doesn’t have to work as hard. It all adds up to vastly superior performance and jaw-dropping sound quality.

    Exceptional Fit and Comfort

    A Welcome Break from Conventional Designs

    Mo-Fi is no ordinary headphone. From the multi-jointed design to earcups shaped—gasp—like ears, we completely reimagined the form and functionality, without any preconceived notions about what headphones are "supposed" to look like. The result feels less like a headphone, and more like a high-quality instrument you can wear. Some call it radical. We just call it Mo-Fi.

    Full Overview Video

      Adjustable Tension Knob

      The typical one-tension-fits-all approach tends to make no one happy. Depending on your head size, ear thickness, and maybe your astrological sign, you’ll probably want a pressure level that’s different from what your headphone provides. That’s why Mo-Fi features an adjustable tension knob that allows you to dial-in the perfect "goldilocks" setting—not too tight, not too loose, but just right.

      Reinvented Headband

      Nearly every headphone out there utilizes the "spring loaded" headband design that you’ve seen a zillion times. But those springy headbands are fraught with problems. They don’t provide consistent pressure. They’re uncomfortable. The ear cups don’t like staying parallel. We knew there had to be a better way...

      And there was. The unique multi-jointed headband solution we designed for Mo-Fi was inspired by the finely tuned suspension of open-wheeled Formula One racecars. It’s elegant. It’s comfortable. And it’s adaptable to a variety of head shapes and sizes. You get a level of fit and comfort that simply isn’t possible on other headphones. And it creates a perfect seal, resulting in solid bass response, improved isolation and reduction in sound bleed.

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      Height Adjustment

      Most headphones on planet Earth require you to adjust the height of the earcups by yanking them down. Mo-Fi’s height adjustment happens in a completely different way. The adjustable pivoting arms allow for a small change in the angle of the earcups to achieve a large amount of height adjustment. The ear cups simply float into place.

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      Our ears are shaped like ears. So why are the earcups on most headphones round? We have no idea either. Mo-Fi’s earcups provide a better seal because the earpad contacts your head at the point nearest your ear, not down the side of your cheek or off the backside of your head. Plus, it’s easy to tell the left side from the right without checking.

      Beyond their shape, Mo-Fi’s earcups play an important role in how the drivers reproduce sound. Mo-Fi provides excellent isolation and ambient noise reduction while still allowing the driver to breathe. It’s like a one-way valve for sound.

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      By Design

      Interested in what’s going on under the hood of Mo-Fi? You’ve come to the right place. In this video you’ll hear some of the details and inspiration behind the electronic and industrial design of the headphones that shun the status quo.

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      Three All-Analog Amp Modes

      Switch It Up, Your Ears Will Thank You

      Unlike other headphones that put more bass in your face whether you want it or not, Mo-Fi lets you choose the right sound for your music. No DSP tricks here — this is analog, baby. No matter if you’re listening to 70s-era rock, modern pop, orchestral, hip-hop or something else, you’ll have total control over your listening experience.




      Loud bass isn’t necessarily good bass—and Mo-Fi knows good bass. Whether "On" or "On+," Mo-Fi delivers the perfect low end for your favorite music.

      Mo-Fi’s amplifier sound profiles include:

      • On:When switched on, the Mo-Fi amplifier delivers completely natural, detailed sound - the full Mo-Fi experience.
      • On+:This setting engages the amplifier’s analog low-frequency enhancement circuit, which delivers incredibly deep and smooth bass for those times when your source material could use some extra low-end support.
      • Off:When switched off, Mo-Fi works in passive mode for connecting to high-performance studio gear that may already have amplification for headphones, or when the battery is at the end of its charge.

        Power Management

        Take the Longest Power Trip

        Mo-Fi’s smart design saves big on battery life, ensuring that the headphones are always ready for action. First off, Mo-Fi knows when you’ve stopped listening and automatically powers down to save juice when you take them off. The battery will charge completely in 3-4 hours, and will give you approximately 12 hours of life-changing playtime (with intelligent power management, that 12 hours will feel like forever). And even if the battery runs down, Mo-Fi will still keep the music going. Finally, headphones with staying power.

        Go From Lo-Fi to Mo-Fi

        Enjoy Music in All Its High-Res Glory

        More and more hi-resolution audio recordings are hitting the market. These incredible tracks far exceed the resolution of MP3s or streaming music, so you can enjoy all the details of the original recordings. But clearly, you shouldn’t listen to such hi-res music with low-res headphones. Only Mo-Fi can faithfully reproduce these amazing recordings. So go Mo-Fi—and hear what you’ve been missing.

        HD Tracks Pono Music J River Mobile Fidelity
        Sound Lab
        Tidal Wimp Music

        For Musicians

        Why Be passive when you can be powered?

        Remember when studio monitors went from passive to active? Now it’s happened to headphones. Mo-Fi brings the performance of high-end reference monitors to your ears, so you can judge what’s really going on in your mix. When you’re tracking loud drums and guitars, the built-in amplifier provides more than enough headroom, while the excellent sound isolation allows you to hear the mix clearly. And since Mo-Fi reproduces sound with such astounding accuracy and detailed imaging, you’ll finally be able to create mixes that translate across all systems.

        I’m big on aesthetics, design, style, quality, and substance, and you immediately have the sense that a lot of attention was paid to these headphones. They are awesome."

        - Jason Bentley

        Music Director, KCRW

        "America’s most influential radio DJ" - Billboard Magazine

        "In short, the Mo-Fi’s easily produce the best quality sound of any headphones I've used."

        "You'll lose yourself to the music and forget
        about the world."

        They translate and sound great no matter what I plug into."

        - Michael “Blumpy” Tuller


        NIN, The Girl with the Dragon Tattoo, The Social Network

        "OK, so I love these F***ing headphones."

        - Christina Warren


        I’ve probably owned every pair of high-end headphones on the market, and I think I found the Holy Grail with Blue."

        - Frank Morrone

        Emmy-Award winning Re-Recording Mixer

        LOST, When We Were Kings, Sex and the City, The Strain

        "...the Momentum put up a fight, but the Mo-Fi's low-end gusto left no doubt it can dig deeper."

        "Can I just say WOW and leave it at that?"

        I’ve been wearing Mo-Fi’s for extended periods of time, like
        9-hour tracking days, and they sound really, really great."

        - Vinnie Colaiuta

        Legendary Studio Drummer

        Sting, Jeff Beck, Herbie Hancock

        "Mo-Fi is a remarkable first headphone from Blue, and one of the most unique headphones to come to market in years."

        — Jude Mansilla

        Founder & Editor, Head-Fi.ORG

        They are so comfortable that I never want to take them off."

        - Carmen Rizzo

        Grammy-nominated Producer, Artist, Remixer

        Coldplay, Seal, Paul Oakenfold

        "...the Mo-Fi phones constitute an impressive piece of engineering..."

        "If you think all headphones are the same, wait until you experience these..."

        I’ve been listening to mixes of my new record on Mo-Fi, and they are going to affect the way my new record sounds. They’re really true."

        - Art Alexakis

        Singer/Songwriter, Everclear

        "Headphones that can fix your music."

        "The F1 racecar of headphones."

        "We don’t trot out the 'rediscovering your music collection' line very often (or lightly), but that notion certainly applies here."

        "...they’re a no-brainer."

        Full Features

        • Custom high-powered audiophile amplifier
        • 50mm, fiber-reinforced dynamic driver
        • Sealed over-ear design for superior isolation and feedback prevention
        • User-adjustable tension and suspension adapt to any head shape
          and size for a perfect fit
        • Racecar-inspired multi-jointed headband design keeps earcups parallel
          at all times for superior comfort and sound
        • All-analog amplifier performance modes: passive, active and enhanced bass
        • Powers on and off automatically when headphones are opened and closed
        • Rechargeable battery provides up to 12 hours of playtime; Mo-Fi continues to play music even when battery has no charge



        • Output power:240mW

        • THD+N:0.004%

        • Frequency response:15Hz-20kHz

        • SNR, self noise:> 105 dB

        • Noise:< 20 uV

        • Battery capacity:1020mAh


        • Type and size:50mm, fiber-reinforced dynamic driver

        • Impedance:42 ohms

        • Frequency response:15Hz-20kHz

        • Enclosure details:Sealed enclosure with tuned damping materials


        • Weight:466 g (16.44 oz)

        • Outer dimensions Closed:21cm x14cm x12cm (8.27" x 5.51" x 4.72")

        • Outer dimensions Open:18cm x 29cm x 12cm (7.09" x 11.42" x 4.72")

        Package Contents

        • Mo-Fi
        • Soft case with cable storage pocket
        • 1.2-meter audio cable with Apple iPhone/iPad controls
        • 3-meter audio cable
        • 1-meter USB charging cable
        • AC charging adaptor
        • 3.5mm to 1/4" TRS adaptor
        • Two-prong airplane connector
        • Registration and warranty information
        • User manual

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