Bose QuietComfort Ultra Earbuds (2nd Gen): problems, parts and running costs

Checked: 2026-10-05

Summary

Noise cancellation is what these earbuds are bought for and what four independent reviews confirm; the complaints are about the things around it — a faint hiss in silence, clipping on sudden loud noises, a touch surface that fires when you push a bud back in, bulky hardware that may not suit small ears, and a three-band app EQ. Running cost is effectively nothing: there are no filters or pods, Bose publishes no battery-degradation figure, and the only optional spend is a BoseCare plan. At the $299.00 list price Bose charged in October 2026 the pair is worth it when ANC is the priority and thin value when it is not. [2][4][1]

Common problems and fixes

Background hiss when nothing is playing, and in Aware mode — PCMag heard a small amount of hiss audible only with no content playing, and the same hiss in Aware mode. Nothing to fix; it is audible in a quiet room. Not a fault, so the 1-year limited warranty does not apply. [2]
Clipping on sudden loud noises — PCMag found clipping on transients such as a bus hitting a bump, and had found the same behaviour on the first generation, so the refresh did not fix it. Nothing owner-side to do beyond keeping volume sane; not covered by the 1-year limited warranty, which covers mechanical breakdown and battery failure. [2][1]
Touch surface triggers itself when a bud is re-seated — PCMag’s testing kept pausing playback and skipping tracks when a bud was pushed back in, until the reviewer learned to pinch the bud clear of the surface. The alternative is the app switch that disables touch controls, which also removes playback and call management. [2][1]
Earwax reaching the driver housing — TechRadar reports owner threads on the previous generation describing wax reaching the driver housing. The 2nd Gen eartips carry an embedded ear-wax guard, which Bose says makes wax easier to capture and remove after prolonged use; replacing the eartips replaces the guard. [3][1][6]
Large buds, wide stem, deep case seating — the buds sit deep in the case and are hard to pull out, protrude more than rivals, and PCMag, TechRadar and WIRED all flag them as a possible bad fit for the smallest ears. Nine eartip and stability-band combinations ship in the box; Bose sells extra sizes and bands separately. Not a defect, so no warranty cover. [2][3][5][1]
Immersive Audio drops battery to about three hours — Bose claims up to 4 hours with Immersive Audio, and Tom’s Guide measured 3. Plain ANC is the longer-running option: about six hours per charge, or 24 hours with the case. [1][4]
App EQ is minimal — four presets plus three unlabeled Bass/Mid/Treble bands, with no listening test to build a personal profile; PCMag called it the poorest user-adjustable EQ in the premium class apart from Apple, which offers none. Nothing to replace it with inside the app. [2][3]
Transparency mode trails the AirPods Pro 2 — PCMag rated it on par with the WF-1000XM5 and behind the AirPods Pro 2, and noted Bose’s transparency works best when set manually, which undercuts automatic speech detection. [2]

Parts and consumables

Eartips and stability bands — the box holds 3 pairs of eartips (S, M, L) and 3 pairs of stability bands (1, 2, 3), nine combinations in all. Bose sells Extra Small and Extra Large eartips and size 0 and 4 stability bands separately, and they can also be ordered through Bose Customer Service; a full replacement set is the QuietComfort Ultra Earbuds (2nd Gen) Fit Kit, part CMWB-QCUE2-EARTIPKIT, sold at Bose; no replacement price with a store and month-year was found. Eartips are the one part expected to wear out in normal use and no owner replacement interval has been reported. [1][7]
Charging case — sold separately by Bose as the QuietComfort Ultra Earbuds Charging Case, part CMWB-QCUE-CASEPWR; no replacement price with a store and month-year was found, and the case carries the earbuds’ extra charges, so a worn case battery matters. Whether the case is user-replaceable for battery wear was not established, and no owner reports of case failure exist for this model. [1][8]
Wireless charging pad — not included. The case charges wirelessly on any compatible third-party pad, and its LED glows solid amber when the case is centred and charging, so a pad has to be bought separately if wireless charging is wanted. No price for one was found. [1]
Ear-wax guard — built into the eartips rather than sold as its own part, so it is changed with the fit kit and never ordered alone. [1][6]

Yearly running cost

Nothing on this pair wears out on a schedule anyone has published. Bose gives no battery-degradation figure, no service turnaround and no failure rate, and no owner report on the 2nd Gen was found on when eartips or stability bands get swapped out, so a per-year parts figure cannot be computed. Charging is USB-C or a third-party wireless pad, and no electricity figure is published for either. No subscription is required for any feature, including Immersive Audio, Cinema Mode and the app EQ. The only running cost with a number on it is optional extended cover, priced at Bose in October 2026: BoseCare at $39.95 for two years, which starts when the 1-year limited warranty ends, or the BoseCare Accident Protection Plan at $79.95 for three years, which starts immediately and adds liquid and accidental-damage cover. Otherwise, not enough data.

When it is a good buy

$299.00 was Bose’s own list price in October 2026, and it was defensible only when noise cancellation was the reason for buying: at that level TechRadar’s reviewer calls it simply the best earbuds for ANC on the market, which is the thing worth paying for, and Tom’s Guide counted it the most expensive of the AirPods Pro 2 / WF-1000XM5 / Bose group. Two thresholds do the work. Near first-generation pricing — the older set is described as nearer $220 in October 2026 — the update stops being worth it, because TechRadar’s advice to owners happy with the first generation is to skip a refresh whose additions are wireless charging, a new colorway and the wax guard. Under roughly $249, the price of the AirPods Pro 2 in October 2026, the gap narrows to the point where the ANC lead is the only reason left to pay more. Above $299 no source supports paying it, and TechRadar points buyers wanting less to cheaper sets such as the Nothing Ear (a), which ship LDAC. [1][3][4][5]

Apple AirPods Pro 2 — the better buy when transparency mode or the Apple ecosystem matters: PCMag rates its transparency ahead of the Bose, Tom’s Guide rates call quality equivalent, and it was $249 in October 2026, below the Bose. [2][4]
Sony WF-1000XM5 — the better buy for sound and endurance: WIRED finds it slightly better overall though behind on noise reduction, Tom’s Guide measured 7.5 hours against the Bose’s six, it ships in a smaller case, and it was seen as low as $210 in sales events in October 2026. [4][5][1][3]
Technics EAH-AZ100 — the better buy for tuning rather than quieting: priced level with the Bose at $299.99, TechRadar gives it slightly more detail and neutrality where the Bose leads on bass impact, and PCMag judged the Bose its equal on bass-heavy material. [3][2][4]