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Headphones

HALDEN ONE

Open-back reference. Nothing added, nothing taken.

Eight years of driver work in a housing machined from a single billet. The ONE is not tuned to flatter — it is tuned to tell you the truth about a mix, then get out of the way.

Response
5Hz–48kHz
THD @ 1kHz
0.08%
Mass
384g

Finish

Graphite

Anodised aluminium · lambskin

£749

Configure

Concept build — adding to cart is a demonstration. No order can be placed.

Specification

Driver

62 mm planar magnetic

Single-ended array, 1.6 µm polymer diaphragm suspended in a symmetric field.

Frequency response

5 Hz – 48 kHz

Measured free-field at 1 m, ±3 dB, on a calibrated head simulator.

Impedance

34 Ω nominal

Flat across the band — no reactive swings for your amplifier to fight.

Sensitivity

98 dB / 1 mW

THD

< 0.08 % @ 1 kHz, 94 dB

“If it does not sit inside the window, it does not ship.”

Measurement policy · 2024