Stopped working in the first 30 mins of usage. The connector to the phone gets really really hot.
Works on S20 Ultra. Good sound quality, thick bass. Best of my 4 different DACs. Much better than BT connection. Build quality is OK, but it's too fragile. I already broke mine in 2 days. USB-C connector got tilted in pocket so now it doesn't make good contact anymore and thus is useles. Main problem is twisted cable which looks nice on table, but causes stress on connector when on pocket. I would try another model with same DAC.