Has anyone successfully used other USB dacs apart from the bundled Razer dongle? I used an Ultrasone Naos USB-C dongle that connected but it will randomly disconnect. Tried using Android drivers as well as custom drivers in apps like UAPP and Neutron. This same Ultrasone dac can connect reliably on a Samsung Galaxy S8+ and ZTE Axon 7. For further testing I tried using a Chord Hugo where the HD USB port also randomly disconnects. Same results from a Teac desktop dac. My question is whether anyone has used a third party USB-C dac successfully and reliably without any disconnects with the Razer phone, if so, what make and model was it?