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Sennheiser IE 900

Wired in-ear monitor headphones

Item # 143IE900

Few phrases capture the imagination of the high-end headphone community like: "new flagship from Sennheiser."

Few phrases capture the imagination of the high-end headphone community like: "new flagship from Sennheiser."

Item # 143IE900

Ships free today

In stock
$1,499.95

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About the Sennheiser IE 900

Top-flight IEMs from the headphone specialists

Few phrases capture the attention and imagination of the high-end headphone community like: "new flagship from Sennheiser." The IE 900 wired headphones are the company's top-of-the-line earbuds, and they promise a spacious, vividly detailed sound. Their ergonomic design closely resembles one of my favorite in-ears, the Sennheiser IE 300 — but these premium earbuds feature upgraded drivers, striking milled aluminum housings, and a more sophisticated airflow control system.
Exploded view of the Sennheiser IE 900

Each Sennheiser IE 900 earbud features a single 7mm premium driver and an intricately designed series of filters and air chambers.

Top-flight IEMs from the headphone specialists

Few phrases capture the attention and imagination of the high-end headphone community like: "new flagship from Sennheiser." The IE 900 wired headphones are the company's top-of-the-line earbuds, and they promise a spacious, vividly detailed sound. Their ergonomic design closely resembles one of my favorite in-ears, the Sennheiser IE 300 — but these premium earbuds feature upgraded drivers, striking milled aluminum housings, and a more sophisticated airflow control system.

Ever-mindful of high-end harshness, Sennheiser has developed a "triple-chamber absorber" system that combats distortion in the treble. It even tames those gnarly resonances from super-high frequencies that can sometimes creep into the range of human hearing. That ensures that we hear refined, yet articulate highs to complement the well-pronounced mids and deep, clean bass.   

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Product highlights:

  • high-performance wired in-ear headphones
  • fit inspired by professional in-ear monitors (IEMs)
    • lightweight, streamlined precision-milled aluminum earbud housings
    • over-the-ear cord routing system keeps headphones secure
  • we recommend a separate headphone amplifier or portable high-res music player for optimum sound quality
  • designed, created, and hand-assembled at Sennheiser's headquarters in Germany
Driver system details:
  • "TrueResponse" 7mm dynamic driver in each earbud
    • tuned for cohesive, finely detailed sound across a wide frequency range
    • clean, powerful bass and well-defined mids
  • X3R three-chamber absorber for minimal distortion and improved dynamics
    • three Helmholtz resonator chambers milled into each earbud housing
    • smooths out harsh peaks and high-end resonances while remaining natural and accurate
  • filters to help manage airflow
    • helps create an open soundstage with proper imaging
Included cables and ear tips:
  • three 49" detachable cables reinforced by durable para-aramid material
    • unbalanced cable with 3.5mm stereo miniplug
    • balanced cable with 2.5mm headphone plug
    • balanced cable with 4.4mm Pentaconn headphone plug
  • gold-plated MMCX earpiece connectors on each earpiece
  • includes 6 pairs of ear tips for a customized, comfortable fit:
    • 3 sizes of silicone ear tips
    • 3 sizes of foam tips for noise-isolating seal
General info and specs:
  • zippered carrying case
  • cleaning tool included
  • total harmonic distortion: less than 0.05% at 1 kHz/94 dB
  • frequency response: 5-48,000 Hz
  • sensitivity: 123 dB
  • impedance: 16 ohms
  • weight: 0.85 oz. (with cable)
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 508949

What's in the box:

  • In-ear headphones
  • 48" Balanced cable with right-angled 2.5mm connector
  • 48" Balanced cable with right-angled 4.4mm connector
  • 48" Unbalanced cable with right-angled 3.5mm connector
  • 3 Pairs of silicone ear tips
  • 3 Pairs of Visco memory foam ear tips
  • Zippered carrying case
  • Clothing clip
  • Cleaning tool
  • Cleaning cloth
  • Instruction Manual
  • Certificate of Authenticity

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More details on the Sennheiser IE 900

Mark G.

Features & specs

General
Fit Style In-ear/Earbud
Earcup Type Closed
Earcup Width x Height 0.813" x 0.687"
Noise-canceling No
Bluetooth No
Bluetooth Version ---
Single-earbud Operation ---
Mic For Taking Calls No
Voice Assistant Access
Amazon Alexa No
Google Assistant No
Siri No
Connectors
3.5mm Yes
1/4" No
Lightning No
4.4mm balanced Yes
XLR4 balanced No
2.5mm Yes
Other None
Specs
Frequency Response 5-48k Hz
Sensitivity 123 dB
Impedance 16 Ohms
Weight 0.8 ounces
Cord Length 48" + 48" + 48"
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research

Features

Overview: The Sennheiser IE 900 flagship in-ear headphones sets a new benchmark in portable audio, combining audiophile performance, innovative technology, and a aesthetically beautiful design. Three 4' cables are included, two with balanced connections, to work with your choice of source devices. The IE 900 comes with 3 pairs of foam and 3 pairs of silicone ear tips to help you find the best fit and comfort. The headphones can be stored in the included premium zippered carrying case.

X3R Technology: The brilliant one-piece aluminum housing is precision-milled by a 5-axis CNC machine from a single block of aluminum. Sennheiser engineers designed a sophisticated system of three Helmholtz resonators which are milled right into the solid aluminum housing. These tiny channels eliminate resonance peaks which color the sound. An acoustic vortex is milled into the nozzle to smooth out peaks and ensure a more natural sound. The housing is anodized to make it highly resistant to corrosion, as well as wear and tear. The earphones are lightweight, and are form-fitting to seat securely in the ear. Each in-ear headphone is hand-assembled by specialists at Sennheiser's headquarters in Germany within razor-thin tolerances.

TrueResponse Driver: The IE 900 utilizes a German-made 7mm TrueResponse dynamic transducer for brilliant, detailed highs, rich mids, and powerful lows that don't turn muddy. A specially developed membrane foil acts to minimize acoustic resonance and distortion. The drivers in each pair of IE 900s are superbly matched during the automated manufacturing process to eliminate variance.

Cables: Three interchangeable audio cables are included to let you choose the cable that fits to your audio source. For high-end digital audio players, DACs, and headphone amps, you can use the balanced cables with 2.5mm or 4.4mm (Pentaconn) plugs. For everyday and single-ended (unbalanced) source units, you can employ the cable with the 3.5mm plug. Each terminal is set at a right angle. All three cables are para-aramid reinforced to withstand the routine of winding and straightening that occurs with each listening session. An adjustable cinch is provided above the yoke for a more secure fit, and a cable clip is included to fasten the cable to your clothing. On the headphone end, the IE 900 uses gold-plated Fidelity+ MMCX connectors that make it easy to swap the cables anytime you want, and adjustable ear hooks that adapt to the natural shape of the outer ear.

Ear Tips: The IE 900 in-ear headphones come with two types of ear tips and three sizes to ensure you have the best fit, acoustic seal, and noise isolation. The Visco Memory Foam ear tips adapt to the shape of the ear canal to provide an optimal fit. Prior to inserting, the foam tips should be compressed between the fingers for a few seconds. After insertion, the earphone should be held in place until the memory foam expands. The silicone ear tips are soft and plyable to provide a secure fit. Each ear tip type comes in three sizes -- small, medium, and large -- for the best fit. When the ear tips are properly fitted, the result is a 26dB attenuation of ambient noise. The supplied cleaning tool has a specialized tip for removing any buildup of ear wax in the ear tips, nozzles, and the sound channel grilles.

Specifications:

  • Frequency Response: 5Hz - 48kHz (-10dB)
  • Sound Pressure Level (SPL): 123 dB (1 kHz/1Vrms)
  • Total Harmonic Distortion (THD): < 0.05 % (1 kHz, 94 dB SPL)
  • Attenuation: -26dB
  • Impedance: 16 Ω
  • Ear Bud Dimensions: Width 0.813" Height 0.687" Depth 0.672"
  • Total Weight: 0.25 ounces (without cable), 0.8 ounces (with cable)

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