Thursday, June 4, 2026
Home Supra – Sound by Sweden – Nitro X over ear headphones – Musical fuel!

Supra – Sound by Sweden – Nitro X over ear headphones – Musical fuel!

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Pros

  • Sounds nice
  • Incredibly comfortable
  • Long battery life

Cons

  • No app
  • Finishing could be nicer

Price: € 189

Build quality
Comfort
Sound
Price
Supra Nitro X

The Sound of Sweden?

Contents

We know Supra’s cables as nice, open, fast and clean. They are no-nonsense products. And we like that at Alpha. No frills.

The Sound by Sweden Nitro X is a headphone that in terms of looks certainly fits that bill. But in terms of reproduction, it tends toward the warmer side. Not overdone – definitely not a “Beats” sound – but a touch of warmth…. Probably to achieve a convivial sound that many users agree with. And to realize a reproduction that makes longer listening possible. After all: when you travel you want peace and quiet. And you listen differently than with a hi-fi system where you really sit down…

Layed back

So the playback is best described as relaxed, touch of cream…. pinch of salt… A nice, balanced flavoury pallete, to taste so to speak. It certainly does not get in the way of the music and it makes listening a pleasant relaxing activity.

As reported, these headphones are mostly in use by your author’s son. Now we’re not going to say that we have locked him in a room since baby to force him to listen to “good sound,” but we can’t deny that he is confronted with it on a daily basis. And so, of course, it creeps in. By now, ‘normal’ headphones aren’t good enough. Although Youtube still regularly plays through the built-in tablet speakers…. it’s a wacky generation.

We did not hear any complaints during the long test period – including this past vacation. When we asked for opinions, we got a “satisfied nod,” meaning that everything is ok. A kind of Junior Alpha Approved, in other words. :-).

The battery also proved itself: no recharging was needed, which is quite impressive! Your author played both via cable and bluetooth during various listening sessions with music and movies. When used more intensively with noise cancelling, a battery naturally lasts less long.

Completing

All in all, we find the Supra – Sound by Sweden – Nitro X a pleasant headphone. The playback is realaxing and the noise cancellation is remarkably good. What especially struck us is how comfortable these headphones are. What a comfortable over-ear this is!

Conclusion

Supra - Sound by Sweden - puts a great set of headphones on the market with the Nitro X. The headphones sound good, have remarkably good noise cancellation, are really very comfortable and come with all the necessary accessories. A good deal for 189 Euros. The only thing they could add is an app. Although we can also enjoy music without it, of course.
Type test
Single Test
Speaker class
Headphones
Speaker type
Over ear
Speaker system
Closed
Signal control
Active
Frequency range
20 Hz - 20000 Hz
Crossover
1-way (broadband)
Dimensions
    Weight speaker
    285 Kg
    Production country
    China

    Winkels met Supra

    Pleinweg 136
    3083 EP Rotterdam, Zuid-Holland, NL
    Hooikade 13
    2627 Delft, Zuid Holland, NL
    St. Ceciliastraat 28
    5038 HA Tilburg, NL
    Breestraat 146-148
    2311CX Leiden, Zuid Holland, NL
    Korevaarstraat 2 e-f
    2311 JS Leiden, NL
    Steenstraat 54
    6828 CM Arnhem, Gelderland, NL
    Beethovenstraat 9-b
    1077 HL Amsterdam, Noord Holland, NL
    Rietlaan 4
    3851 PA Ermelo, NL