Inquisitor Eisenhorn Omnibus is widely considered the gold standard of Warhammer 40,000 audiobooks, largely due to the legendary performance of narrator Toby Longworth Spanning three core novels—

As for the audiobook, I found that it is available on various platforms:

Often the most cost-effective way to get the collection using a single credit.

foreign and I'm jimbus. today we have got a a guest with us Gaz. who is a friend of ours who is into the eisenhall. books as well. YouTube·Library of Chaos: A 40k Lit Podcast The SUFFERING of Inquisitor Eisenhorn