i also have driver problems with my Wyred4sound Dac2 all of a sudden WASAPI didnt work anymore the Dac was useless emailed the company and they said that there was no plan to update the driver because they said that it was discontinued i was mad i had only bought this dac 2 years ago so in order to get a working dac i had to upgrade to dac2 dsd when i received it i used WASAPI as usual and it still didnt work but the driver file also came with ASIO drivers tried that and it worked emailed the company again to tell them about the WASAPI driver and they said they were worknig on a new driver .Gear gets obsolete so fast these days .
PC Windows 10>Musicbee>Quad 405>Burson Conductor >Pioneer SX750>Woo Audio22>FLUXION AV-7 S.E.T. Speaker amp>FU32+6N2 AMP.>Asus Essence STX>CmoyBB>Sennheiser HD800S >Grado RS2E>DENON LA-D5000 LITE >DENON AHD-1001,Kef 104,Klipsch KG 5.5