If you want a simple, cost-effective upgrade for your JBL wireless earbuds that prioritizes a secure fit in the charging case and basic comfort, choose JNSA Replacement Earbuds Tips; if you need advanced acoustic engineering with graphene-infused materials to unlock deeper bass and clearer highs across a wide range of wired or wireless headphones, choose PENON ePro EP01.
• JNSA Replacement Earbuds Tips: Offers a straightforward, durable silicone solution specifically engineered to snap perfectly into JBL TWS cases without removal; the trade-off is its limited compatibility strictly to specific JBL models and a standard sound profile. This pick is for the owner of JBL Tune 230NC, Vibe 200TWS, or Free X who just needs reliable replacement tips.
• PENON ePro EP01: Delivers high-fidelity audio improvements through a patented horn-shaped nozzle design and graphene-doped silicone, but comes in a smaller quantity (3 pairs) and requires a specific nozzle diameter to function correctly. This pick is for audiophiles and active users seeking better isolation and sound quality from universal IEMs or sports earphones.
The JNSA Replacement Earbuds Tips are designed with a singular, practical mission: to restore the seal and fit of specific JBL True Wireless Stereo (TWS) earbuds. If you own a pair of JBL Tune 230NC, Tune 125TWS, Tune 130NC TWS, Vibe 200TWS, or the Free X, these tips are engineered to solve the most common frustration with budget-friendly replacements—they fit back into the charging case seamlessly. Unlike many third-party accessories that force you to peel off old foam or silicone before storing your buds, the JNSA tips are sized to sit flush within the housing, maintaining the sleek profile of your charging setup.
For those who sleep on their side, this product offers a distinct advantage in daily usability. The material is described as high-quality soft silicone that is elastic and comfortable to the touch. While it does not claim to be a specialized "side sleeper" insert, the softness and the ability to maintain a consistent seal mean less pressure buildup during long listening sessions. The package includes six pairs of tips across three sizes (S, M, L), giving you enough variety to find a size that doesn't cause fatigue. This volume is particularly helpful if you lose tips frequently or have family members sharing different earbud models.
However, you should skip this product if you do not own a compatible JBL model or if you are looking for a significant boost in audio fidelity. The JNSA tips focus on physical fit and durability rather than acoustic enhancement. They reduce external noise simply by providing a good seal, but they do not employ any proprietary technology to alter the sound signature. If your current earbuds sound muddy or lack bass, swapping to these tips will not fix the driver limitations of the original hardware. They are a functional accessory, not an audio upgrade tool.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-26 · 6 min read · Independent comparison
The PENON ePro EP01 represents a step up in complexity and performance, targeting users who care deeply about the sonic character of their audio gear. These aren't just passive covers; they are built around a patented horn-shaped nozzle design that utilizes silicone doped with graphene. This combination is intended to minimize sound loss during transmission and resonate sound waves within the tip itself to amplify voice clarity and extend frequency response. If you are hunting for the best in-ear earbuds for side sleepers who also demand high-fidelity audio, the structural rigidity and snug fit of the EP01 provide the stability needed to keep the drivers aligned with your ear canal, even when shifting positions.
This product shines for users with a wide array of equipment beyond just one brand. With an inner nozzle diameter of 4.7mm, it fits devices ranging from 4.9mm to 7mm, making it a versatile choice for various wired In-Ear Monitors (IEMs), Bluetooth sports earphones, and other wireless earbuds. The graphene-enhanced silicone is washable and flexible, ensuring that the tips can withstand intense workouts without degrading. For sweat-resistant applications, the material properties suggest a robust barrier against moisture and wear, which is critical for gym-goers or runners who use ear clip headphones for side sleepers or sport-focused designs.
The trade-off here lies in the specificity of installation and the quantity provided. You only get three pairs (S, M, L), which is half the volume of the JNSA set. Furthermore, the "horn-shaped" design is a technical feature that may require a precise fit to the nozzle of your specific earphone; if your device has a non-standard shape, the seal might not form correctly. It is not a universal drop-in replacement for every single earbud on the market, so verifying your nozzle diameter is essential before purchasing. It is best suited for enthusiasts who understand the impact of eartip geometry on sound quality.
• Best for JBL TWS Owners → JNSA Replacement Earbuds Tips (Specifically tuned for Tune and Vibe series cases).
• Best for Audio Enthusiasts → PENON ePro EP01 (Graphene doping and horn-shape enhance bass and vocal clarity).
• Best for Case Compatibility → JNSA Replacement Earbuds Tips (Designed to stay inside the charging lid without removal).
• Best for Universal Fit → PENON ePro EP01 (Fits nozzle diameters from 4.9mm to 7mm across many brands).
• Best Value Quantity → JNSA Replacement Earbuds Tips (6 pairs total vs. 3 pairs for PENON).
• Best for Active Use → PENON ePro EP01 (Washable, flexible, and stable design for movement).
• Best for Simple Comfort → JNSA Replacement Earbuds Tips (Standard soft silicone, no complex geometry).
• Best for Sound Isolation → PENON ePro EP01 (Patented design minimizes sound loss and amplifies resonance).
In my opinion, the decision comes down to whether you need a spare part or an upgrade. If you are an avid side sleeper who uses JBL earbuds and just wants to ensure they fit comfortably in the case while blocking out noise, the JNSA Replacement Earbuds Tips are the logical, hassle-free choice. However, if you treat your audio gear as a serious hobby and want to squeeze every bit of performance out of your headphones—especially if you are looking for sweat resistant in ear headphones for side sleepers that also sound great—the PENON ePro EP01 is superior. Its graphene-infused construction and patented shape offer tangible benefits in sound quality and stability that generic silicone tips cannot match. For me, the acoustic advantages of the PENON make it the winner for anyone willing to verify their nozzle size, but the JNSA remains the king of convenience for JBL users.
Both products offer soft silicone for comfort, but the PENON ePro EP01 features a more rigid, ergonomic horn shape that provides a tighter seal, which is often preferred by side sleepers to prevent the earbud from falling out during sleep.
You must check the nozzle diameter first. The PENON ePro EP01 fits nozzles between 4.9mm and 7mm. If your JBL model falls within this range, they can work, but the JNSA tips are specifically molded to match JBL's case dimensions for a perfect fit.
The JNSA set includes 6 pairs of tips (2 of each size S, M, L), whereas the PENON ePro EP01 comes with 3 pairs (1 of each size S, M, L).
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.