Good quality. I've listened to a fair few audio books in my day, and some have obvious technical problems (especially when you can tell the transition from one recording session to another by a change in volume or the reader's voice). Hardly any of that here. Almost seamless. The reader, Simon Prebble, did a great job conveying the humor. I suspect that you'd need a British sense of timing to pull off a British humorist's writing, and Prebble certainly did well. He conjured up a number of voices and accents to portray the various characters. He really shone with the European accents. When it came to the few American accents, they all sounded the same (I suspect Prebble is British) except the one Minnesotan accent which sounded like a troop of Norwegian actors doing a recreation of the movie Fargo (i.e., I'm from America and have even lived near Minnesota and nobody there talks or sounds like that at all). Minor complaint. The audio quality was mostly stellar. (I'd have given it 4.5 out of 5 stars here, if that were even an option.)