Sennheiser IE 900 Headphones Right Replacement

Sennheiser IE 900 Headphones Right Replacement

Restore Reference-Grade Stereo—With the Only Right Earpiece That Sounds Like Your IE 900

When your right channel goes missing or gets damaged, you don’t want a compromise—you want your IE 900 back. This genuine Sennheiser right‑side replacement restores the pristine detail, speed, and effortlessly open presentation that made the IE 900 your daily reference. Built to the IE 900’s exacting standard, it drops straight in, mates with your existing Fidelity+ MMCX cable, and gets you listening again with the same precision-milled housing and TrueResponse driver architecture you trust.

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Why Audiophiles Choose This Product

• Primary Benefit: True IE 900 sound—no guesswork. Replace only the right earpiece and preserve the IE 900’s neutral‑leaning, highly resolving signature with fast transients, wide/deep staging, and refined treble control. This is an authentic IE 900 component, not a third‑party substitute, so your stereo image and tonality lock back in the way they should. Professional reviewers consistently praise the IE 900’s clarity, organization, and insight.
• Technical Benefit: X3R engineering inside. The IE 900’s single 7 mm TrueResponse dynamic driver works with Sennheiser’s X3R system—three precisely machined Helmholtz resonator chambers and an acoustic vortex—to linearize the upper registers and reveal microdetail without harshness. This replacement preserves that exact acoustic system and driver topology.
• Practical Benefit: Seamless, lasting fit. The compact, 4 g, precision‑milled aluminum shell is shaped for a secure, low‑fatigue fit and daily durability—exactly like your original IE 900. Swap the earpiece, click in your cable, and you’re done.
• Compatibility Benefit: Plug-and-play with your setup. Uses Sennheiser’s gold‑plated Fidelity+ MMCX connector, so it works with your existing IE 900 cables (2.5 mm, 3.5 mm, or 4.4 mm) and ear tips. No re-terminations, no adapters required.
• Unique Benefit: Guaranteed genuine to avoid counterfeits. The IE 900 line is popular—and frequently counterfeited in the aftermarket. Buying the official right‑side replacement ensures authentic materials, tolerances, and performance.

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What’s Included

• Right Earpiece: Sennheiser IE 900 right headphone module (Article No. 508965). Factory part specified as “Headphone Right Replacement.”
• Note: Cable, ear tips, carry case, and accessories are not included with this service part and are sold separately. Use with your existing IE 900 left earpiece and Fidelity+ MMCX cables.

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Technical Specifications

Specification	Value	Notes
Product Type	Wired in‑ear monitor earpiece (right)	Replacement module for Sennheiser IE 900
Transducer	7 mm single dynamic “TrueResponse”	Fast transient response and low distortion via X3R tuning system.
Acoustic Design	X3R with triple Helmholtz resonators + acoustic vortex	Smooths treble resonances for natural, detailed highs.
Impedance	16 Ω	Easy to drive from portable sources.
Frequency Response	5 Hz – 48,000 Hz (-10 dB)	Extended bandwidth for high‑resolution material.
SPL (1 kHz, 1 Vrms)	123 dB	High headroom with clean dynamics.
THD	<0.05% (94 dB, 1 kHz)	Low distortion for transparency.
Connector	Gold‑plated Fidelity+ MMCX (right)	Directly accepts IE 900 stock and upgrade cables.
Housing	Precision‑milled anodized aluminum	Durable, lightweight chassis identical to original.
Weight	Approx. 4 g (without cable)	Secure, low‑fatigue wear.
Part Number	508965	Official Sennheiser service part listing.

Compatibility notes: This part is for the IE 900 only. It is not specified for IE 200/300/600 models. Use with IE 900‑series Fidelity+ MMCX cables (2.5/3.5/4.4 mm).

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Professional Recognition

• Reviews highlight the IE 900’s “clear, open” presentation, incisive detail retrieval, and refined treble—attributes preserved when you replace with this genuine earpiece. What Hi‑Fi notes the IE 900’s articulate, cohesive sound and clever resonance‑control engineering; SoundGuys praises its excellent sound quality and build.
• Heritage and innovation: The IE 900 represents Sennheiser’s flagship single‑dynamic IEM approach, featuring the TrueResponse driver and X3R resonator system inside a CNC‑milled aluminum body, designed for consistency and longevity.

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The Bottom Line

If you love your IE 900, there’s no substitute for a genuine replacement when life happens. This official right‑side earpiece restores your stereo image, preserves the IE 900’s exact tuning and technical performance, and fits your existing cables and tips—so you’re back to listening in minutes, with confidence. For authenticity, consistency, and the sound you chose the IE 900 for in the first place, this is the right way to make your right channel right again.

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Product Type Guidelines (Headphones)

• Connectivity: Wired (Fidelity+ MMCX). No Bluetooth or wireless features.
• Sound signature: Neutral‑leaning, highly resolving, with clean bass, open mids, and refined treble—subject to proper tip fit and seal.
• Comfort: 4 g aluminum shell with over‑ear cable routing supports extended sessions with minimal fatigue. Tip choice and seal remain crucial.

Tip for buyers: To avoid counterfeit parts and ensure full performance, purchase the official Sennheiser replacement by part number (508965) and pair it with your original IE 900 left earpiece and cables.

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