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Hear the night in every note.

Ondelle builds reference-grade headphones for people who listen the way others read: slowly, completely, alone with the work.

Silence is the instrument. Everything else is played on it.

Four decisions, made slowly.

Nocturne took four years because we would not trade one of these for another.

Woven-carbon drivers

Forty-millimeter diaphragms woven from carbon thread move air with almost no mass of their own, so a piano's hammer arrives as a strike, not a smear.

40 mm woven carbon, 5 Hz to 48 kHz

Macro of the woven carbon driver seen through the perforated grille

Nocturne resting on the seat of an empty night train beside a rain-streaked window

Close-up of the lambskin ear cushion and its stitched seam

The machined aluminum yoke with its polished champagne chamfer

A listener in a lounge chair wearing Nocturne, facing a tall window over a city at night — For the hour after the house goes quiet.

We tuned Nocturne late at night, at the volume people actually listen at when everyone else is asleep. Detail stays audible at a whisper, so you never have to turn it up.

Nocturne folded in its open felt-lined travel case with a braided cable, airline adapter and cloth — In the case: Nocturne, braided cable, airline adapter and cloth.

Built to be kept for twenty years.

Every part that wears out can be replaced by hand at home: cushions, headband, cable and battery. We keep them in stock for as long as your serial number exists.

Cushions
Magnetic. Off and on again in ten seconds.
Headband
Two screws and a new band, $45.
Cable
Braided, with 3.5 mm and USB-C ends. Swaps by hand.
Battery
One panel, no glue. A new cell is $39.

Companion app

Tuned by ear. Kept by app.

Shape the sound signature, set how much of the world gets in and check the battery from one quiet screen. Your profile lives in the headphones, not the phone.

Sound profile

Nocturne connected

Battery 82%, about 49 hours left

Playback per charge: 60 h
Ambient reduction: −38 dB
Charge for three hours: 5 min
Sound profile updates: OTA

Hear it before you decide.

Forty-five quiet minutes with a pair, your own music and nobody trying to sell you anything. Four rooms, by appointment, free of charge.

A listening room with walnut slat walls, a leather armchair and Nocturne on a stand beside a brass lamp — Room two, Bredgade 34, Copenhagen

Journal

Notes from the workshop, the tuning room and the places we go to listen.

Hands with fine tweezers working on a disc of woven carbon thread under a task lamp

Craft · 6 min read

How a driver is woven

Three thousand carbon filaments, one small loom in Aarhus and a pairing tolerance of half a decibel.

Nocturne on a measurement fixture inside a dark anechoic chamber lined with foam wedges

Sound · 8 min read

Tuning in the quietest room we could find

A black boathouse with one lit window on a still fjord at blue hour

Places · 4 min read

Forty minutes of nothing

First edition, from $1,290

Take your seat.

Reserve with a fully refundable $100 deposit. Founding listeners choose their finish first and keep serial numbers 0001 to 1500.

Finish

Refundable until dispatch

Cancel any time before your pair ships and the deposit returns within five working days.

Reservation terms

Two years, parts for life

Full warranty for two years, drivers for five, and spare parts for as long as the serial exists.

Warranty and repairs

Insured delivery

Free, tracked and insured to 31 countries, with duties included in the EU, UK, US and Japan.

Shipping and returns