The magazine Ljud & Bild has tested our upgraded version of SUPRA NiTRO-X Hybrid. In the previous test, the NiTRO-X was included and received the distinction “Highly recommended,” and in this test with the upgraded version, it is described as even better!
“I've worn the Nitro-X Hybrid ANC on airplanes on a couple of occasions and the noise cancellation does a good job of removing the noise. Actually better than I expected. I never missed either the Sony WH-1000XM5 or the Sennheiser Momentum 4 Wireless, both of which remained in the drawer at home.”





