Do Upgraded Eartips Really Change IEM Sound? HiBy Myth Busting

Quick answer

Yes, eartips can change what you hear, but not because they magically upgrade your IEMs. The biggest audible factor is seal: a better seal improves bass and isolation, while a poor seal leaks low frequencies and makes everything sound thin. Material and tube design matter too, but the effect is usually smaller than the jump from a bad fit to a good one. If your current tips seal well and feel comfortable, a new set is unlikely to transform your IEMs.

What eartips can actually change

Eartips sit between the IEM nozzle and your ear canal, so they influence two things: the seal that keeps air pressure stable, and the distance and angle at which sound reaches your eardrum. A secure seal is what preserves bass energy. When air escapes around the tip, low frequencies drop away first, which is why a loose fit sounds bright and thin. Insertion depth also shifts how you perceive treble, because the ear canal behaves like a small resonant tube. Move the tip deeper or shallower and the peak shifts. None of this is mysterious, and none of it requires exotic materials. It is fit and acoustics, not magic.

Myth 1: Upgraded eartips unlock hidden drivers

Eartips cannot add drivers, change a crossover, or reveal detail that your IEM does not reproduce. If a tip swap makes your IEMs sound more detailed, the likely cause is a better seal reducing masking from leaked bass, or a slightly different insertion depth changing treble emphasis. On a flagship like the HiBy Zeta, which uses nine drivers per side with a true 5-way crossover, the tuning is set by the IEM itself. Tips can help you hear that tuning more clearly, but they cannot rewrite it. Treat any claim that tips unlock hidden performance with suspicion.

Myth 2: Silicone is bright, foam is bassy

This is a useful shortcut, not a rule. Foam tips often seal more easily because they expand to fill the canal, and that better seal can make bass feel fuller. But foam also absorbs some high-frequency energy, which can soften treble. Silicone tips tend to last longer, are easier to clean, and preserve more treble energy, but they demand a more precise fit. The honest answer is that seal quality dominates. A well-fitted silicone tip can outperform a poorly fitted foam tip for bass, and vice versa. Judge the fit first, then the material.

Myth 3: The most expensive tips are the best

Price tracks materials, manufacturing, and brand, not guaranteed compatibility with your ear canal. A budget set that seals properly will beat a premium set that leaks. The HiBy WG02 Wave Guided Liquid Silicone Eartips are a good example of practical design over hype: a standard tube, straight top, balanced sound claim, skin-friendly and anti-allergic silicone, and good transparency and sound isolation. At USD 10.88 against a USD 14.90 comparison price, they are an inexpensive way to test whether a different tube and top shape suits your ears. If they seal better than what you own, you will hear a difference. If they do not, no price tag will fix that.

Myth 4: One tip fits every IEM and every ear

Nozzle diameter, tip bore, and your ear canal shape all vary. A tip that fits one IEM may slide off another or sit too shallow. Size options matter for the same reason: the WG02 is offered in multiple sizes, and choosing the wrong one undoes the benefit. Start with the size that gives a light seal without pressure, then adjust. If you feel you must push the tip deep to get bass, it is probably too small. If it aches after twenty minutes, it is probably too large or too firm.

How to test a tip swap without fooling yourself

Change one variable at a time. Keep the same IEM, the same source, and the same volume. Listen to a track you know well, then swap only the tips. Pay attention to bass weight, treble sharpness, and how much outside noise you hear. If the new tips seal better, you should notice more low-end presence and less background noise. If the sound only seems different because it is louder or you expect it to change, that is expectation bias, not acoustics. Give each pair a few days before deciding, because comfort affects how deeply you insert them.

Verdicts on common eartip claims

• Eartips change IEM sound: True, but mostly through seal and insertion depth. A good seal restores bass and isolation; a poor seal leaks low frequencies. Material and bore shape are secondary. Verdict: real effect, wrong explanation. Fix the seal first.
• Upgraded tips unlock hidden detail: False. Tips cannot add drivers or change a crossover. On a 9-driver, 5-way design like the HiBy Zeta, the tuning is fixed. Tips only help you hear it more clearly. Verdict: myth. Buy tips for fit, not for hidden performance.
• Foam always beats silicone for bass: Not reliably. Foam often seals more easily and can feel bassier, but it also absorbs treble. Silicone lasts longer and preserves treble but needs a precise fit. Seal quality decides the outcome. Verdict: depends on your ears. Try both if you can.
• Expensive tips are automatically better: False. Price reflects materials and brand, not compatibility. The HiBy WG02 at USD 10.88 is a low-risk way to test a standard tube and straight top. If it seals, you win; if not, return to sizing. Verdict: myth. Spend on the right size, not the highest price.
• You can judge tips in one quick listen: Risky. Expectation bias and volume differences fool you. Swap one variable at a time, keep the same source and output, and live with each pair for a few days before deciding. Verdict: slow down. Comfort and seal over a week tell the truth.

Product facts that matter for tip swaps

• HiBy WG02 Wave Guided Liquid Silicone Eartips: Standard tube, straight top, balanced sound, waveguide tube design, skin-friendly and anti-allergic silicone, excellent transparency and sound isolation. A straight-top standard tube is a neutral starting point for most IEMs. The anti-allergic silicone helps if you get irritation from generic tips, and the isolation claim is the one to verify by ear: better isolation usually means a better seal, which is what actually changes bass.
• HiBy Zeta: Tribrid IEM with 9 drivers per side, true 5-way crossover, 5-way independent acoustic chambers and tubing, spatial harmonic enhancement structure. A complex flagship like this is tuned by its crossover and chambers, not by tips. Tips can help you hear the intended tuning through a proper seal, but they will not redesign the sound. If you own a Zeta, spend your effort on fit rather than chasing tip-based upgrades.
• HiBy FD3: USB DAC and headphone amp with 3.5mm single-ended, 2.5mm and 4.4mm balanced headphone outputs, for computers and smartphones. If you are comparing tips, make sure your source is consistent. Switching between single-ended and balanced outputs changes output power and can change perceived dynamics, which is easy to mistake for a tip difference. Pick one output and stick with it during the test.