Halvorsen
Halvorsen HP-90
Open-back planar headphones
$1,299
● In stock
Our reference planar — effortless detail without a hint of glare.
Pairing note Planar loads are current-hungry — pair with the Solstice or another desktop amp.
- 30-day home trial — full refund, no restocking fee
- Free tracked shipping on orders over $99
- 5 years warranty, handled by us directly
Full specifications
| Acoustic design | Open-back, over-ear |
|---|---|
| Transducer | 100 mm planar magnetic |
| Impedance | 34 Ω |
| Sensitivity | 98 dB/mW |
| Frequency response | 8 Hz – 48 kHz |
| THD | < 0.1% (1 kHz, 100 dB) |
| Weight | 455 g (without cable) |
| Cable | 2 m dual-sided OFC, 4.4 mm balanced + 3.5 mm adapter |
| Earpads | Lambskin over memory foam, user-replaceable |
| Warranty | 5 years |
Compare these numbers side-by-side on the comparison bench →
Why we stock it
The HP-90 is the headphone we reach for when a customer asks what “end-game” actually sounds like. The 100 mm planar driver keeps bass textured at any volume, and the stage is wide without sounding hollowed-out. It is genuinely current-hungry, though — budget for a desktop amp and it will repay you for years.
Owner reviews
Rated 5 out of 5 ✓ Verified purchaseThe last headphone I'll buy for a decade
“I came in chasing detail and left understanding what people mean by “effortless.” Nothing sounds pushed. Paired with the Solstice as the store suggested — they were right about it needing real power.”
Rated 5 out of 5 ✓ Verified purchaseWorth the amp upgrade
“Sounded good from my old combo unit, sounds spectacular from a proper Class-A amp. The 30-day trial is what convinced me to try; the bass texture is what convinced me to keep.”
Rated 4 out of 5Heavy, but you stop noticing
“455 g is real, and the first week I felt it. Then the clamp settled and now it disappears. Sound is beyond criticism at this price. Knock a star off for the stiff stock cable.”
