Skip to content
  • 💰 Save big on your favorite styles🛍️ 20% off all purchases 💳
  • 💰 Save big on your favorite styles🛍️ 20% off all purchases 💳
Headphone Audio StoreHeadphone Audio Store
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Headphones
    • In-Ear Earphones
    • Open Headphones
    • Closed Headphones
    • Wireless Headphones
    • Custom In-Ear Monitors
    • Gaming Headsets
    • Studio & DJ
  • Headphone Amps & DACs
    • Desktop Amps & DACs
    • Portable Amps & DACs
  • Accessories
    • Headphone Cables
    • Earpads & Spare Parts
    • Headphone Adapters
    • Eartips
    • Bluetooth Adapters
    • Hearing Protection
    • Noise Isolators
    • Headphone Stands
  • Audio
    • Audio Cables
    • Digital Audio Players
    • Streamers & HiFi
    • Speakers
  • Other Gear
    • Cases
    • Power & Power Conditioners
    • Flash Memory
Headphones / Custom In-Ear Monitors
Sale!
Fir Audio M4 Custom IEM

Fir Audio M4 Custom IEM

$320.00 Original price was: $320.00.$95.99Current price is: $95.99.

Buy Now
SKU: M4CIEM Categories: Custom In-Ear Monitors, Headphones
  • 100% High-Quality Guarantee
  • Prompt service, every time.
  • Safe Payments, Happy Customers
  • Hassle-Free Payments
Browse
  • Accessories
    • Bluetooth Adapters
    • Earpads & Spare Parts
    • Eartips
    • Headphone Adapters
    • Headphone Cables
    • Headphone Stands
    • Hearing Protection
    • Noise Isolators
  • Audio
    • Audio Cables
    • Digital Audio Players
    • Speakers
    • Streamers & HiFi
  • Headphone Amps & DACs
    • Desktop Amps & DACs
    • Portable Amps & DACs
  • Headphones
    • Closed Headphones
    • Custom In-Ear Monitors
    • Gaming Headsets
    • In-Ear Earphones
    • Open Headphones
    • Studio & DJ
    • Wireless Headphones
  • Other Gear
    • Cases
    • Flash Memory
    • Power & Power Conditioners
  • Description
  • Reviews (0)

Musicality at the four-front.

Placing a priority on an engaging, musical tuning, the M4 pairs 4 drivers with FiR’s unique technologies to achieve the best rendition of this tuning possible. Utilising a dynamic driver for well-extended and highly textured lows, this is paired with 3 balanced armatures covering the midrange and high frequencies, tuned for a smooth, vast and yet highly resolved sound signature. The internal design is constructed with our proprietary tubeless design and the 3rd generation atom pressure release system, lending the musical sound an even larger soundstage presentation and a pneumatic pressure-free listening experience best suited for vocalists, keyboardists, guitarists and audiophiles.

This product is a custom in-ear monitor that requires a scan or impression of your ear made by a professional audiologist or technician.

All product images are for reference only. The final appearance of your CIEM will differ based on your chosen design.

Minidisc offers end to end delivery of custom in-ear monitors including 3D scans, in-store demos, ordering and after sales service. Click here for more details and frequently asked questions about what to expect!

RECOMMENDED IMPRESSIONS PROVIDERS 

Please contact us BEFORE you get your impressions, and we will give you brand-specific instructions for obtaining impressions.

In partnership with Auricle Digital, Minidisc can now offer in-store impressions using the latest eFit 3D scanning technology. Click here for more details and to make a booking!

Minidisc also recommends NS Audiology for physical impressions – please mention us when making an appointment for a discount on your impressions.

Placing a priority on an engaging, musical tuning, the M4 pairs 4 drivers with FiR’s unique technologies to achieve the best rendition of this tuning possible.

Reviews

There are no reviews yet.

Be the first to review “Fir Audio M4 Custom IEM” Cancel reply

Related products

Sale!
Bang & Olufsen Beoplay E8 2.0 True Wireless In-Ear Headphones
Quick View

Headphones

Bang & Olufsen Beoplay E8 2.0 True Wireless In-Ear Headphones

$322.00 Original price was: $322.00.$99.99Current price is: $99.99.
Sale!
Beyerdynamic T5p 2nd Gen Tesla Audiophile Portable Headphone
Quick View

Closed Headphones

Beyerdynamic T5p 2nd Gen Tesla Audiophile Portable Headphone

$368.00 Original price was: $368.00.$98.99Current price is: $98.99.
Sale!
Sennheiser IE 600 High Resolution Earphones
Quick View

Headphones

Sennheiser IE 600 High Resolution Earphones

$363.00 Original price was: $363.00.$98.99Current price is: $98.99.
Sale!
Sennheiser CX True Wireless
Quick View

Headphones

Sennheiser CX True Wireless

$199.95 Original price was: $199.95.$96.99Current price is: $96.99.
Sale!
Azla Orta In-Ear Earphone
Quick View

Headphones

Azla Orta In-Ear Earphone

$129.00 Original price was: $129.00.$90.30Current price is: $90.30.
Sale!
Noble Audio Katana In-ear Monitor
Quick View

Headphones

Noble Audio Katana In-ear Monitor

$364.00 Original price was: $364.00.$97.99Current price is: $97.99.
Sale!
Audio-Technica ATH-E50 Professional In-Ear Monitor Headphones
Quick View

Headphones

Audio-Technica ATH-E50 Professional In-Ear Monitor Headphones

$299.00 Original price was: $299.00.$97.99Current price is: $97.99.
Sale!
Focal Clear MG Premium
Quick View

Headphones

Focal Clear MG Premium

$319.00 Original price was: $319.00.$99.99Current price is: $99.99.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

[contact-form-7 id="15"]
Copyright 2026 © www.soundheadphones.com
  • Headphones
    • In-Ear Earphones
    • Open Headphones
    • Closed Headphones
    • Wireless Headphones
    • Custom In-Ear Monitors
    • Gaming Headsets
    • Studio & DJ
  • Headphone Amps & DACs
    • Desktop Amps & DACs
    • Portable Amps & DACs
  • Accessories
    • Headphone Cables
    • Earpads & Spare Parts
    • Headphone Adapters
    • Eartips
    • Bluetooth Adapters
    • Hearing Protection
    • Noise Isolators
    • Headphone Stands
  • Audio
    • Audio Cables
    • Digital Audio Players
    • Streamers & HiFi
    • Speakers
  • Other Gear
    • Cases
    • Power & Power Conditioners
    • Flash Memory
  • Login

Login

Lost your password?

Register

Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.