Headphones · Closed-back · Dynamic
Austrian Audio Hi-X55
All Austrian Audio · MSRP $349
The Hi-X55 is a closed-back, over-ear studio headphone from Austrian Audio with 44 mm High Excursion drivers, a detachable cable, metal hinges and bow, and a foldable design. It is positioned for mixing and critical listening work and is made in Austria.
Specifications
| Frequency response | 5 Hz – 28 kHz |
| Sensitivity | 118 dBspl/V |
| Impedance | 25 Ω |
| THD | 0.1% |
| Driver | 44 mm |
| Dimensions (W × H × D) | 200 × 170 × 85 mm |
| Weight | 305 g |
As stated by the manufacturer — not community data.
Will it drive? · On paper
Plays straight from a phone
A phone or laptop reaches full listening level. An amp is a choice, not a requirement.
| Needs, for 110 dB peaks | 0.40 V · 6.3 mW |
| Phone or laptop (≈0.70 V, 20 mW) | Enough |
| Dongle DAC/amp (≈2.0 V, 120 mW) | Enough |
Worked out from the stated 118 dB/V and 25 Ω — not a listening test.
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