On November 25, 2020, we announced that the Bulkpet compatible driver provided with the UD-505 and NT-505 was not compatible with the macOS 11.0 Big Sur announced by Apple, but verification has been completed.

Please download "TEAC ASIO USB DRIVER V1.0.5 for Mac" from the download page of each product as shown below.

NT-505 Download Page
UD-505 Download Page