HRAudio.net was formerly sa-cd.net, that used to have a much better search engine than its successor in that it made it possible to seek specifically for multichannel SA-CD releases. I recall that last time I was able to check, many years ago, close to half of almost
10,000 SA-CDs produced at that time were multichannel. And nowadays, there has been a more than 50% increase of the number of SA-CD releases according to HRAudio.net.
Let's play some maths with the help of the lesser capable search engine of HRAudio.
As of today (October 5, 2025),
HRAudio lists 17,272 titles, of which 1,262 are released on other formats that SA-CD (1,090 Blue Ray Audio discs, 80 Blue Ray Video discs, 44 DVD Audio and 42 MQA-CD).
That means a grand total of 16,010 SA-CD titles are listed on HRAudio.
HRAudio search engine is able to find 9,805 multichannel releases. If we take the conservative approach to assume that all releases on other formats than SA-CD are all multichannel releases (save for the 42 MQA-CDs, which are not multichannel-capable), that would mean that, by subtracting 1,220 from 9,805, there are 8,578 multichannel SA-CD releases. That is more than 50% of all releases on that format.
But in reality, there are even more, because some 2.0 stereo only titles have been released on DVD Audio or Blue-Ray discs.