turn theCITYdown.to a room you could nap in.

QUELDE ONE · ADAPTIVE NOISE-CANCELLING EARBUDS PRE-ORDER NOW · SHIPS MARCH 2027

SCROLL · 110 dB TO 0

SWIPE TO QUIET IT

Move across the lines. Every one you cross goes flat.

−42 dB

That’s what Quelde does, all day.

dB · turning the city down

118

your day,

in decibels.

One Tuesday in the city, at the levels a sound meter shows. Keep scrolling: the day moves sideways.

 Scroll · the day moves sideways

06:50

80dB

Alarm, then the street

Bin lorry under the window, three mornings a week.

A subway platform with a train blurring past

08:12

95dB

Platform 2

Over 85

The 8:14 arrives. You can’t hear your own music.

08:31

88dB

In the carriage

Over 85

Wheel squeal on the curve before the bridge.

People working at desks in an open office

11:40

65dB

Open-plan office

Two stand-ups and a printer, all at once.

13:05

78dB

Lunch queue

Milk steamer, forty conversations, one playlist.

18:40

85dB

Rush hour, Fifth & Main

Over 85

Horns, a bus kneeling, a siren two blocks over.

23:10

0dB

Nothing to show. That’s the point.

Quelde on

Same street, same bin lorry tomorrow. You won’t hear it.

that’s LOUD.

106 dB

Peak noise measured on New York subway platforms.

Columbia University, 2006

85 dB

Where hearing damage starts after eight hours.

NIOSH exposure limit

1.1 bn

Young people at risk of hearing loss from unsafe listening.

WHO, 2015

23 min

To get back on task after one interruption.

UC Irvine

65 dB

A busy open-plan office after lunch.

Typical measured level

HOLD TO MUTE

or focus the button and hold Space

same train,

30 dB.

● Muted · −65 dB

Quelde One takes a 95 dB platform down to the level of a quiet bedroom. Six microphones, re-measured 50,000 times a second.

What noise costs

It takes about twenty-three minutes to get back to a task after a single interruption.

Source · Gloria Mark, University of California, Irvine

Night noise above forty decibels is linked to worse sleep, even when it doesn’t wake you up.

Source · WHO Night Noise Guidelines for Europe, 2009

In Western Europe, noise is the second biggest environmental threat to health, after air pollution.

Source · WHO, Burden of Disease from Environmental Noise, 2011

meetQuelde One.

Two earbuds and a pebble that charges them. Open the lid and they’re already listening.

01 Pebble case · 36 h with charging · USB-C and Qi

02 5.4 g per bud · IP54

03 The light tells you: blue, charged

inside, it’sFive parts.

Everything that listens for noise fits in 5.4 grams. Scroll to take one apart.

01 Touch lens · tap, hold, swipe

02 Q1 chip · 50,000 checks a second

03 Battery · 9 h with Quiet on

04 11 mm driver · 20 Hz–40 kHz

05 Silicone tip · four sizes in the box

now,

hear it.

Four rooms, made live in your browser. Press play, then drag the line to switch Quelde on.

Wheel squeal and rumble: the low end almost disappears.

Off

92dB

Quelde on

31dB

Quelde offQuelde on

20 Hz200 Hz2 kHz20 kHz

Sound is synthesised on this page. Keep your volume low to start.

Friends talking as they walk down a city sidewalk

and when you need it,

let voices in.

Hold the lens for a second. Traffic stays out, the person in front of you comes through. Hold again to go back to quiet.

the

numbers.

Everything you’d check before you buy, in one place. Measured on our own rigs; your numbers will vary with fit and volume.

Noise cancelling

Up to 42 dB, adaptive

Battery

9 h buds · 36 h with case

Quick charge

10 min in the case → 2 h

Weight

5.4 g per bud · 46 g case

Driver

11 mm dynamic · 20 Hz–40 kHz

Microphones

6 · three per bud, wind mesh

Connection

Bluetooth 5.4 · AAC · LC3 · multipoint

Water & sweat

IP54 buds · IPX4 case

Charging

USB-C · Qi wireless

Graphite · launch colour

six

finishes.

Two launch colours, two limited runs of 2,000, and two you can only get by pre-ordering. Drag the row sideways.

Graphite

Launch colour

Satin black that hides fingerprints and pocket lint. The one most people pick.

Fog

Launch colour

A cool lilac-grey, the colour of the page after the noise stops.

Signal

Limited · 2,000 cases

The loudest thing about them. Easy to find at the bottom of a bag.

Hush

Pre-order only

Our blue, the one on the light when the buds are charged.

Sand

Launch colour

Warm, soft and a little matte. Looks like it was left out in the sun.

Moss

Limited · 2,000 cases

A deep green-grey for people who think black is too much.

100dB

Roadworks

82dB

Bus stop

88dB

Bar terrace

110dB

Siren route

95dB

Rail bridge

80dB

School yard

Pre-order Quelde One

the

quiet map.

Move the bubble around the block. Everything inside it drops to the level of a library.

Inside the bubble31dB

early

listeners.

Four hundred people wore Quelde One for a month before launch. We asked them one question: what did you stop hearing?

I forgot I was on the Northern line until my stop came up on the screen.
Priya N.
38-minute Tube commute
91 → 30 dB
My open-plan office finally sounds like a library at 9 a.m.
Tomás R.
Product designer
66 → 28 dB
Flew eleven hours to Tokyo and slept for eight of them.
Hannah W.
Flies twice a month
84 → 29 dB
Café mode keeps the barista and loses the blender. I don’t know how.
Kofi A.
Writes from coffee shops
78 → 33 dB
I turned my music down by half. My ears noticed before I did.
Mei L.
Cycles, then takes the train
88 → 31 dB
The first transparency mode that doesn’t sound like a tin can.
Jonas F.
Live sound engineer
72 → 34 dB
My toddler’s tantrums are now a distant weather event.
Sam O.
Parent of two
95 → 36 dB
Roadworks outside my window at 3 a.m. and I slept straight through.
Aisha K.
Night-shift nurse
82 → 29 dB

I turned my music down by half. My ears noticed before I did.
Mei L.
Cycles, then takes the train
88 → 31 dB
The first transparency mode that doesn’t sound like a tin can.
Jonas F.
Live sound engineer
72 → 34 dB
My toddler’s tantrums are now a distant weather event.
Sam O.
Parent of two
95 → 36 dB
Roadworks outside my window at 3 a.m. and I slept straight through.
Aisha K.
Night-shift nurse
82 → 29 dB

and that’s why we built

Quelde One.

Adaptive noise cancelling that follows you from the platform to the office to your pillow. Reserve a pair now; we only charge you when it ships.

Ships March 2027

First 10,000 pairs, in order of reservation

30-day returns

Send them back for any reason

2-year warranty

Lost one bud? $49 replaces it

Reserve yours · $249

No charge today. We take payment the day your pair leaves the warehouse.

By reserving you agree to our pre-order terms. Cancel any time before shipping for a full refund.

110dB

turn theCITYdown.to a room you could nap in.

in decibels.

Alarm, then the street

Platform 2

In the carriage

Open-plan office

Lunch queue

Rush hour, Fifth & Main

Quelde on

that’s LOUD.

meetQuelde One.

inside, it’sFive parts.

hear it.

let voices in.

numbers.

Up to 42 dB, adaptive

9 h buds · 36 h with case

10 min in the case → 2 h

5.4 g per bud · 46 g case

11 mm dynamic · 20 Hz–40 kHz

6 · three per bud, wind mesh

Bluetooth 5.4 · AAC · LC3 · multipoint

IP54 buds · IPX4 case

USB-C · Qi wireless

finishes.

Graphite

Fog

Signal

Hush

Sand

Moss

quiet map.

listeners.

I forgot I was on the Northern line until my stop came up on the screen.

My open-plan office finally sounds like a library at 9 a.m.

Flew eleven hours to Tokyo and slept for eight of them.

Café mode keeps the barista and loses the blender. I don’t know how.

I turned my music down by half. My ears noticed before I did.

The first transparency mode that doesn’t sound like a tin can.

My toddler’s tantrums are now a distant weather event.

Roadworks outside my window at 3 a.m. and I slept straight through.

I turned my music down by half. My ears noticed before I did.

The first transparency mode that doesn’t sound like a tin can.

My toddler’s tantrums are now a distant weather event.

Roadworks outside my window at 3 a.m. and I slept straight through.

Quelde One.

Reserve yours · $249