New: Shop Kickstarter-backed products that are in stock and ready to ship!

Menu

New: Shop Kickstarter-backed products that are in stock and ready to ship!

Add description, images, menus and links to your mega menu

A column with no settings can be used as a spacer

Link to your collections, sales and even external links

Add up to five columns

  • Add description, images, menus and links to your mega menu

  • A column with no settings can be used as a spacer

  • Link to your collections, sales and even external links

  • Add up to five columns

    • The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    The Open-Back IEM That Lets You Hear More
    Video

    The Open-Back IEM That Lets You Hear More

    $615.00
    Open-Back, All-Day Comfort. 10mm driver, airy stage, balanced tuning for fatigue-free listening. 🎧
    Fosi Audio IM4 Open-Back In-Ear Monitor brings long-lasting comfort and high fidelity together. A 10mm beryllium-coated diaphragm with low distortion delivers dynamic bass and sparkling treble, while balanced tuning keeps vocals and instruments natural across genres. The open-back, dual-chamber design reduces resonance and inner-ear pressure for an airy soundstage that stays relaxed for hours. An N52 dual-magnetic circuit improves response and dynamics. The 4-strand 5N OFC silver-plated cable with gold-plated connector keeps the signal clean. Lightweight CNC 6063 aluminum shells, triple-tunable ear tips, and two swappable nozzles let you tailor fit and sound. Back this project on Kickstarter now.

    About

    Fosi Audio specializes in designing and manufacturing high-quality audio equipment. We offer a wide range of products, including amplifiers, DACs (digital-to-analog converters), and headphone amplifiers, among others. Fosi Audio was founded in 2017 and has quickly gained a reputation for producing affordable yet high-performance audio gear.

    FAQ

    What does it mean to back a project (pledge)?

    When you back a project, you are pre-ordering the product. That means you will get it once it's produced. Besides getting the product itself, you're also joining a community. Follow along the production process, take part in important surveys and give the creator valuable feedback.

    What is Kickstarter?

    Kickstarter is a launchpad for creators to raise funds for the initial production of their invention. Backers (that's you!) can support the creator by pre-ordering the product at a discounted price.

    How do I pledge?

    In order to pledge, click that green button that says Back this project . You will get to select your shipping country and choose your desired pledge level and reward.

    🎁 Support this project & unlock additional 30% off Darwin M2

    The Darwin M2 is a versatile tool for makers and learners—Kickstarter-funded and ready to ship.

    • Coupon code will be revealed after completing a short post-pledge survey
    • Also emailed if you're subscribed to the First Backer newsletter

    Not subscribed yet? Join here to get the code by email too.

    DON'T WANT TO WAIT FOR FULFILLMENT?

    Explore More

    Metal Time Models - Roadway Fantasy Harley Motorcycle

    $69.00

    Pi Lap Desk – Foldable & Portable Laptop Stand

    $99.99

    Maxtand 2.0 - Create a Flexible Workspace Anywhere

    $85.00 $189.00

    Universal Lens Cap - Protect Every Lens, No More Lost Caps or Dust Damage

    $34.99 $50.00

    INVZI MagHub 3 - Supercharge Your Tablet with 8-in-1 Docking Station

    $129.00

    Jiffys - Erase Fingerprints Instantly, No Sprays, No Fuss, No Residue

    $29.99

    Hanboost 35 In 1 Precision Electric Screwdriver Set - Fix Small Devices Like a Pro

    $69.00 $89.00

    Darwin M2 - Professional-Grade Digital Microscope with 1600X Zoom

    $129.90 $199.90