i had both these cards... there were something like $150 to $250 usd back then
this was when Soundblasters were all there was (and maybe Gravis Ultrasound is your were a bit arch)
back then these cards were 98 or XP and they worked fine... even in games... they lasted a long time... I seem to recall I was still using these cards when Win7 came out in 2009
the drivers just worked HOWEVER they did not last long in Win7 due to the fact that you cannot expect a company to keep releasing drivers close to a decade after the fact
now this was a funny time in that digital out on PCs werent that common and so I was a bit reluctant to spend hundreds on cards that STILL had the dacs inside but truth be told they got them to work
they both provided audiophile quality in a PC and I just kept transplanting them from PC to PC
i ended up retiring them when digital out cards became real cheap like $20 cheap and you could just pass it out to a DAC
true to form i think both used... AKM
theyre still in the garage at my dads place