--- product_id: 580697091 title: "Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total" brand: "otto tech" price: "€ 12.10" currency: EUR in_stock: true reviews_count: 8 category: "Otto Tech" url: https://www.desertcart.ie/products/580697091-phonak-open-4-0-dome-small-0-29-inch-7 store_origin: IE region: Ireland --- # Compatible with multiple models 0.29 inch diameter Genuine OEM parts Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total **Brand:** otto tech **Price:** € 12.10 **Availability:** ✅ In Stock ## Summary > 👂 Hear the world, comfortably! ## Quick Answers - **What is this?** Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total by otto tech - **How much does it cost?** € 12.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/580697091-phonak-open-4-0-dome-small-0-29-inch-7) ## Best For - otto tech enthusiasts ## Why This Product - Trusted otto tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tailored Comfort:** Designed for narrow and small ear sizes, ensuring a snug fit. - • **Reliable Performance:** Genuine OEM parts guarantee safety and optimal performance. - • **Skin-Friendly Material:** Non-allergenic silicone ensures comfort and durability. - • **Versatile Compatibility:** Compatible with various Phonak and Unitron hearing aids. - • **Natural Sound Enhancement:** Open design allows natural noise to filter through, improving sound quality. ## Overview The Phonak Open 4.0 Dome Small is a pack of 10 genuine OEM replacement domes designed for narrow ear sizes. With a diameter of 0.29 inches (7.5mm), these non-allergenic silicone domes enhance sound quality while ensuring a comfortable fit. Compatible with multiple hearing aid models, they are essential for optimal auditory performance. ## Description Product description Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) are compatible with SDS 4.0 receiver wire Phonak Audeo Marvel/Paradise sds 4.0 hearing aid receiver is compatible Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) Phonak Audeo Marvel/Paradise sds 4.0 hearing aid receiver Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 054-0785 are compatible with Hearing Aid using only SDS 4.0 receivers(following hearing aid models) · Phonak: Audeo Lumity, Audeo Marvel, and Audeo Paradise platform (Manufactured after 2019 using SDS 4.0 only receiver) · Phonak Audeo Paradise - P - Phonak Audeo P30-13T, Phonak Audeo P30-312, Phonak Audeo P50-13T, Phonak Audeo P50-312, Phonak Audeo P70-13T, Phonak Audeo P70-312, Phonak Audeo P90-13T, Phonak Audeo P90-312,Phonak Audeo P30-R, Phonak Audeo P30-RT, Phonak Audeo P50-R, Phonak Audeo P50-RT, Phonak Audeo P70-R, Phonak Audeo P70-RT, Phonak Audeo P90-R, Phonak Audeo P90-RT, Phonak Audeo P30-RL, Phonak Audeo P50-RL, Phonak Audeo P70-RL, Phonak Audeo P90-RL · Phonak Audeo Marvel - M - Phonak Audeo M30-13T, Phonak Audeo M30-312, Phonak Audeo M30-312T, Phonak Audeo M50-13T, Phonak Audeo M50-312, Phonak Audeo M50-312T, Phonak Audeo M70-13T, Phonak Audeo M70-312, Phonak Audeo M70-312T, Phonak Audeo M90-13T, Phonak Audeo M90-312, Phonak Audeo M90-312T, Phonak Audeo M30-R, Phonak Audeo M50-R, Phonak Audeo M50-RT, Phonak Audeo M70-R, Phonak Audeo M70-RT, Phonak Audeo M90-R, Phonak Audeo M90-RT · Phonak Audeo Lumity - L - Phonak Audeo L90-R, Phonak Audeo L70-R, Phonak Audeo L50-R, Phonak Audeo L30-R, Phonak Audeo L20-R, Phonak Audeo L90-RT, Phonak Audeo L70-RT, Phonak Audeo L50-RT, Phonak Audeo L30-RT, Phonak Audeo L-R Trial, Phonak Audeo L-RT Trial · Phonak Bolero Marvel- M - Phonak Bolero M30 M-312, Phonak Bolero M50 M-312, Phonak Bolero M70 M-312, Phonak Bolero M90 M-312, Phonak Bolero M30-PR, Phonak Bolero M50-PR, Phonak Bolero M70-PR, Phonak Bolero M90-PR · Phonak Slim - Phonak Slim P90-R Phonak Slim P70-R Phonak Slim P50-R Phonak Slim P30-R Phonak Slim P-R Trial · Unitron: Moxi Blu, Moxi Jump and Moxi Move Discover (D), and Discover Next (DX) RIC (receiver-in-the-ear) platform · Audicus: Omni, Spirit, and Wave Model Hearing Aids · Hansaton: Excite platform released in 2018-19 · Costco : Kirkland Signature KS9 KS10 · Hidden Hearing Phonak Open Dome 4.0 S (Small) for small and medium ear canals - oem parts no: 054-0785 Phonak Open Dome 4.0 S (Small) is equipped with ventilation holes throughout the dome and therefore gives a very open feeling. You thereby avoid occlusion and at the same time experience an open feeling in the ear canal. Open domes are best for mild hearing loss, as the sound is brighter and less intense than the other types. Replacement of the domes ensures optimal sound quality and prevents eczema and discomfort in the ear canal. Domes should be replaced at least every 2 weeks, or as needed. GENERAL RULES: As a general rule, it is a good idea to change your Phonak domes over for fresh ones about once every 15 days or at most every month. This is to help keep them clean and hygienic and to reduce the risk of wax and debris clogging up the small pores that are beneath the tiny silicone hood and compromising the hearing aid's performance Audiologist recommend OEM Phonak Hearing aid Phonak Open Dome 4.0 S (Small) for small and medium ear canal Phonak Open Dome 4.0 S (Small) for new phonak hearing aids(marvel paradise lumity slim ) The two versions of wires are incompatible with each other, the easiest way to check is to look at the tip of the receiver wire. Enhance Your Hearing Experience with Open 4.0 Domes Unlock a new dimension of auditory clarity with our specially designed open domes for hearing aids. Crafted for individuals with mild to moderate hearing loss, these open domes redefine the "open fit" concept, allowing the seamless integration of natural sounds into your listening experience. Exceptional Sound Quality The innovative design of open domes incorporates strategic openings that permit the passage of natural noise into the ear canal. Experience a richer audio environment as lower frequencies find their way, contributing to an improved and more authentic sound quality. Say goodbye to the muffled sensation associated with hearing aids – our open domes strike the perfect balance between amplification and preservation of natural auditory nuances. Tailored for Mild to Moderate Hearing Loss Open domes are the optimal choice for those with mild to moderate hearing impairments. Achieve personalized comfort and enhanced hearing without compromising on the integrity of natural sounds. The "open fit" design ensures a seamless blend of amplified sounds and the ambient environment, offering a holistic hearing solution. Airflow and Comfort Our open domes boast strategic vents that not only facilitate airflow but also prevent the feeling of aural occlusion. Experience all-day comfort without the sense of isolation commonly associated with hearing aids. The ergonomic design ensures a secure fit, allowing you to forget you're even wearing a hearing aid while enjoying improved sound perception. Invest in Your Hearing Well-Being: Elevate your hearing aid experience by choosing open domes – a testament to cutting-edge technology and user-centric design.Prioritize sound quality, comfort, and a natural auditory experience with our open dome solution.Join the ranks of those who have embraced a life of improved hearing without compromise. Review: OEM Fit and work perfectly. - Oem. Fit and work perfectly! Review: Well made - Fits nice ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #34,616 in Health & Household ( See Top 100 in Health & Household ) #9 in Hearing Aid Domes | | Customer Reviews | 4.6 out of 5 stars 558 Reviews | ## Images ![Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 1](https://m.media-amazon.com/images/I/81qtsaMZDML.jpg) ![Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 2](https://m.media-amazon.com/images/I/71RRlKRg+kL.jpg) ![Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 3](https://m.media-amazon.com/images/I/81YyguHoU2L.jpg) ![Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 4](https://m.media-amazon.com/images/I/71DVicXosQL.jpg) ![Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Image 5](https://m.media-amazon.com/images/I/71EBuX9we-L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ OEM Fit and work perfectly. *by A***R on May 14, 2026* Oem. Fit and work perfectly! ### ⭐⭐⭐⭐⭐ Well made *by D***A on April 15, 2026* Fits nice ### ⭐⭐⭐⭐⭐ The best domes for me *by A***Y on December 4, 2025* I had issues with my hearing aids slipping out with medium domes. The large closed domes worked to hold them in, but natural sound was very muted, especially my own voice, and sounded unnatural. These open domes did the trick. My aids are securely in place and the open design lets me hear more naturally as opposed to only through the hearing aid. ## Frequently Bought Together - Phonak Open 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total - Wax Guards for Phonak Hearing Aid Accessories and Unitron RIC RITE Hearing Aid, Hearing Aid Filters (3 Packs/ 24 Pcs) - Phonak Vented 4.0 Dome Small (0.29 inch=7.5mm) 10 Domes, Genuine OEM Switzerland Replacement by Sonova, Hearing Aid Domes for Phonak Audeo Marvel Paradise Lumity Accessories -1 Pack/10 Domes Total --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/580697091-phonak-open-4-0-dome-small-0-29-inch-7](https://www.desertcart.ie/products/580697091-phonak-open-4-0-dome-small-0-29-inch-7) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-05-27*