grell audio Reviews 

I’ve been using the Grell OAE2 for a few weeks now, and I’m honestly impressed. The sound quality is excellent—very balanced with clear mids, crisp highs, and a deep but controlled bass. You can tell these headphones are tuned with a lot of attention to detail, especially if you like a more accurate, studio-like sound rather than something overly boosted.
The build quality feels premium, and they sit comfortably even during longer listening sessions. The design is clean and modern without being flashy.

Overall, I would recommend the Grell OAE2 to anyone looking for high-quality headphones with a focus on sound fidelity and comfort.

I will not elaborate on the earphones themselves since I have not found time for thoroughly evaluating them (first impression: they are great), but want to praise the customer service: I hat difficulties updating the earphone's firmware, I kept stuck in a loop. I contacted the customer support, which guided me through several troubleshooting manoeuvres. Since none of them worked, the support asked me to send them back and a few days later I received a new pair of TWS/1 earphones--with which the update worked.