Halcyon Drift Pro review: excellent earbuds, exasperating case

Halcyon products are usually described as beautiful before they are described as anything else, and the Drift Pro is no exception. What is unusual is that this time the sound justifies the attention.

24.1dB

Isolation at 100 Hz

Bud class average: 19.4 dB

7:10

Battery in the bud, ANC on

5.4g

Weight per bud

The sound

Lifted low bass, forward presence region, and a treble that stays clean up to the point most buds start to sizzle. It is a livelier tuning than the Atlas II and a less honest one — vocals sit further forward than they were mixed to, and busy recordings lose a little separation.

For the money that is a fair trade, and for the intended use — walking, commuting, a gym — arguably the correct one. What impresses is the headroom: at high volume there was no measurable compression and no audible distortion, which is not something we can say about most of the $229 field.

Test	Result	Class average
Isolation, 100 Hz	24.1 dB	31.4 dB
Isolation, 1 kHz	22.0 dB	26.8 dB
Response shift, ANC on	1.1 dB	0.6 dB
Distortion at 100 dB SPL	Below 1%	Below 1%
Weight per side	5.4 g	286 g

Head-and-torso simulator, four tip sizes tested and the best-sealing pair used. Reference is the Northbeam Atlas II measured in the same session.

Seven decibels behind a good over-ear at 100 Hz is roughly the physics of the format, and no bud we have measured closes that gap. What the Drift Pro does do is get much closer than most, which makes it a real alternative rather than a compromise.

The case

We have thought about how to write this section without it sounding petty, and there is no way, so: the lid opens in a bag.

The case is a machined aluminium lozenge, 58 mm across, with a magnetic hinge and no detent. The magnet holds the lid closed against gravity when the case is upright. It does not hold it closed when the case is on its side and something presses against the seam, which is the state a case is in for the entire time it is in a bag.

Over five weeks we found the case open in a bag eleven times and lost a bud onto the floor twice. Both were recovered. A third time would not have been.

Battery and everything else

Seven hours and ten minutes in the bud with cancellation on, measured at 75 dB SPL, against a claimed eight. Twenty-nine hours with the case. Both figures are at the low end of the current field and both are honest, which counts for something.

No wireless charging, which at $229 in 2026 is a genuine omission. The app is small, fast, requires no account, and offers a five-band equaliser that actually works.

The verdict

If Halcyon fixes the case, this is a 8.4 and an easy recommendation. As shipped, it is a superb-sounding pair of earbuds that you have to look after, and the score reflects both halves of that sentence.