Launched in 2015 and long discontinued, the QC20 remains one of the most searched legacy ANC earbuds in existence — it still works, still cancels noise remarkably well, and refurbished pairs keep circulating on Amazon.
Buying a discontinued headphone with a sealed battery takes extra care. This guide covers the verified specs, our verdict, the QC20 vs QC20i difference, how to buy safely, and the modern alternatives worth considering.
SoundMavericks Verdict: The In-Ear ANC Benchmark That Refuses to Die
The QC20’s reputation is simple: the first in-ear headphone whose ANC genuinely rivaled full-size over-ears. Flip the switch on a plane or commute and engine and crowd noise fall away in that almost eerie drop. That signature experience hasn’t aged at all.
What has aged is everything around it. The sealed battery in the control module was rated for up to 16 hours of ANC per charge — but on a refurbished pair, real-world stamina is a question mark. The remote comes in two platform-specific versions (detailed below), and the wired 3.5 mm connection means most modern phones need an adapter. Sound is warm and non-fatiguing rather than cutting-edge; commuters never cared, audiophiles always wanted more detail.
| Noise Cancellation | 9.4 |
| Comfort & Design | 9.2 |
| Sound Quality | 8.0 |
| Features | 7.6 |
| Battery Life | 8.0 |
| Value (as a Renewed buy) | 7.5 |
Buy it if you want legendary in-ear ANC, don’t mind a cable, and are comfortable buying renewed. Skip it if you want wireless, a fresh battery with warranty, or water resistance — modern true wireless ANC earbuds are the smarter buy.
Bose QC20 Specs
| Specification | Detail |
|---|---|
| Form factor | Wired in-ear earbuds with StayHear+ silicone tips (S, M, L included) |
| Noise cancellation | Active noise cancellation via control module, on/off switch plus Aware mode |
| Battery life | Up to 16 hours of noise cancellation per full charge |
| Charging time | Approximately 2 hours via included USB cable |
| Battery | Built-in rechargeable lithium-ion, sealed inside the control module |
| Cable length | 52 inches (132 cm), 3.5 mm angled plug |
| Weight | 1.55 oz (44 g) |
| Drivers | Dynamic drivers with TriPort acoustic architecture |
| Controls | Inline mic and remote for calls, music, and Aware mode; platform-specific versions |
| Water resistance | Not water resistant |
| Versions | QC20 (Android, Windows) and QC20i (Apple devices) |
| Status | Discontinued by Bose — third-party and renewed listings only |
Design & Comfort: Still the Earbud to Beat
The earbuds are tiny nozzles with Bose’s StayHear+ tips — soft silicone wings that nestle into the ridges of your outer ear instead of wedging deep into the canal. They stay put for hours without the pressure of foam or deep-insert tips, and people who can’t tolerate standard in-ears routinely found the QC20 wearable all day.
Everything electronic lives in a slim control module partway down the cable: the ANC circuitry, the rechargeable battery, the power switch, and the Aware mode button. It clips to your shirt and stays unobtrusive, with the inline remote just below it — and this is where the versioning trap lies (see below). A 3.5 mm angled plug and 52-inch cable complete the package.
In the box: earbuds, three StayHear+ tip pairs, USB cable, clothing clip, and carrying case. On renewed pairs, confirm tips and case are included.
Noise Cancellation: The Reason This Product Still Exists
The QC20’s ANC was a genuine milestone: the first in-ear system that could stand next to the big over-ear QuietComfort models. It attacks the low, steady drones that ruin travel — airplane engines, train rumble, office HVAC — and reduces them to a faint background murmur. That party trick is as satisfying today as it was a decade ago.
Against modern wireless flagships, the QC20 gives up ground on wind handling and sharp, irregular sounds. But on the steady low-frequency noise that matters most for travel, it still punches far above its vintage — which is why frequent flyers kept buying them long after Bose moved on.
The standout feature is Aware mode. One press on the control module drops the ANC and pipes ambient sound back in — hear gate announcements or hold a conversation without removing the buds, while your music keeps playing.
Sound Quality: Warm, Smooth, and Easy to Live With
The QC20’s signature is classic Bose: warm, smooth, and non-fatiguing. Bass extends deeper than expected once ANC is engaged, mids are full without being pushy, and treble stays relaxed — a tuning made for eight-hour flights, not critical listening.
Be honest about expectations: detail retrieval trails today’s best wired IEMs, and bassheads will find the low end polite rather than powerful. But for podcasts, movies, and casual music on the move, relaxed tuning plus deep quiet is a combination many listeners prefer to sharper, more fatiguing alternatives. Sound leakage is minimal at sane volumes.
Battery Life & the Sealed-Battery Reality
New, the QC20 delivered up to 16 hours of ANC per charge and recharged in about two hours over USB — and you can keep listening while it charges.
- The battery is sealed. It’s a non-user-replaceable unit inside the control module — and on pairs manufactured years ago, some capacity loss is realistic.
- They work dead. With the battery fully empty, the QC20 still plays music and takes calls in passive mode — just without ANC, a fallback modern wireless buds can’t offer.
Before buying renewed or used, ask the seller about battery health and favor listings with a solid return policy — the battery is the single most important thing to get right.
QC20 vs QC20i: Which Version Do You Need?
This is the detail that trips up more buyers than anything else. Bose sold two versions that differ only in the inline remote:
| QC20 | QC20i | |
|---|---|---|
| Designed for | Android, Samsung, and Windows devices | iPhone, iPad, and iPod models |
| Remote | Full controls on Android/Windows | Full controls on Apple devices |
| Model numbers | 718840-0010 (black) | 718839-0010 (black), 718839-0020 (white) |
| On the “wrong” platform | Audio and ANC work; buttons are unreliable | Audio and ANC work; buttons are unreliable |
ANC, battery, sound, and comfort are identical — audio and ANC work on any device, only the remote buttons are platform-locked. Match the version to your daily phone; Apple users should target the QC20i listing:
How to Buy a Discontinued QC20
Bose no longer manufactures the QC20. Realistic options are Amazon Renewed, third-party sellers, and the secondhand market. Buy safely:
- Start with Amazon Renewed. Inspected, tested, and returnable — the safest route for a product this old, and where we found verified live stock.
- Confirm the version. Check the listing title and model number (718840-0010 vs 718839-0010/0020) before ordering.
- Vet marketplace sellers. Check ratings and review counts; skip listings with stock photos only or no stated return window.
- Ask about the battery. “Works” isn’t “holds a full charge.” Ask directly how long ANC lasts.
- Check tips and case. StayHear+ tips wear out; replacements exist, but factor them into the total cost.
- Plan for the jack. Most current phones need a USB-C or Lightning to 3.5 mm adapter.
QC20 vs Modern Alternatives
| Bose QC20 | Bose QuietComfort Ultra Earbuds | Sony WF-1000XM5 | |
|---|---|---|---|
| Form factor | Wired in-ear, 3.5 mm | True wireless | True wireless |
| ANC | Excellent, travel-grade | Flagship-level with spatial audio | Flagship-level, best-in-class calls |
| Battery | Up to 16 h ANC, sealed cell | All-day with charging case | All-day with charging case |
| Water resistance | None | Sweat and splash resistant | Sweat and splash resistant |
| Availability | Renewed/third-party only | New, current product | New, current product |
| Best for | Travel ANC on a trusted cable | Wireless Bose loyalists | Feature and call-quality chasers |
The QC20’s case rests on zero-latency wired audio and a comfort profile shallow-fit fans still prefer; everything else — wireless freedom, water resistance, multipoint, app EQ — goes to the modern pair. Love the fit and fly constantly? Buy renewed. Otherwise, buy current.
Pros & Cons
Pros
- ANC that still embarrasses most modern in-ears
- StayHear+ tips: among the most comfortable fits ever made
- Aware mode for announcements without removing the buds
- Works in passive mode with a dead battery
- Zero-latency wired connection for movies and gaming
- Minimal sound leakage at normal volumes
Cons
- Discontinued — renewed and third-party stock only
- Sealed, aging battery with no user-replacement path
- Platform-specific remote — easy to buy the wrong version
- Wired 3.5 mm needs an adapter on modern phones
- No water resistance; not a workout earbud
- Sound is warm rather than detailed
Frequently Asked Questions
Are the Bose QC20 discontinued?
Yes. Bose discontinued the QuietComfort 20, so only Amazon Renewed, third-party, and secondhand listings remain. Renewed is the safest route — inspected and returnable.
What is the difference between the Bose QC20 and QC20i?
Only the inline remote. The QC20i’s remote is made for Apple devices; the QC20’s for Android and Windows. ANC, battery, sound, and comfort are identical — only the buttons are platform-specific.
How long does the QC20 battery last?
Up to 16 hours of noise cancellation per charge, with about 2 hours to recharge over USB. On renewed or used pairs, expect some capacity loss from age — verify battery health with the seller first.
Do the Bose QC20 work when the battery is dead?
Yes. The QC20 keeps playing music and handling calls in passive mode with an empty battery — you just lose noise cancellation until you recharge.
What is Aware mode on the QC20?
A button on the control module that drops the ANC and lets outside sound back in — hear announcements or converse without removing the buds. Music keeps playing.
Do the QC20 work with phones that have no headphone jack?
Yes, with an adapter. The QC20’s 3.5 mm plug needs a USB-C or Lightning to 3.5 mm adapter on jack-less phones; audio and ANC work fine through one. The remote version still needs to match your platform.
Are the Bose QC20 water resistant?
No. The QC20 has no water resistance rating and isn’t suitable for workouts or rain.
Is the Bose QC20 still worth buying?
Yes, if you want legendary in-ear ANC, the StayHear+ comfort, and zero-latency wired audio — and you’re fine buying renewed. No, if you want wireless convenience, water resistance, and a fresh battery with a warranty: a modern true wireless ANC earbud is the smarter choice.
Final Verdict
The QC20 is a rare thing: a discontinued product that still earns its search traffic. Its noise cancellation and comfort remain genuinely excellent, its warm sound suits long trips, and the wired connection is a feature for movies and gaming. The compromises are all about age — a sealed battery of uncertain stamina, a platform-locked remote, and renewed-or-secondhand stock only.
Buy renewed from a reputable listing, match the version to your phone, and you’ll own a piece of ANC history that still does its signature trick as well as almost anything.
I am the founder of Sound Mavericks, where I provide the polite truth about audio equipment. I started this site because consumer electronics reviews are often too technical. Instead of using a silent lab, I test headphones, earbuds, and Bluetooth speakers in the real world – like on a noisy subway or in a busy coffee shop.
To stay independent, I buy my own review units (mostly from the United States) rather than accepting free gifts from brands. Once I finish testing a product, I sell it locally to our community. My goal is to help you understand sound quality, active noise cancellation (ANC), and battery life without the marketing hype.
