I own the MSB Select II with the dual powerbases and 33 Femto Clock. had if for 2 years now.
as far as direct comparison with other dacs the closest I’ve done is listening to the Select II at shows and then listening to other top dacs in other systems at shows. this was how I originally decided to purchase the Select II as I was trying to hear another dac at shows that could do what I heard the Select II doing at a lower price. I could not so, after 2 years of trying, I bought it.
comparing top dacs directly is a bit challenging, even if you have them both together. for instance, the Select II is modular (customers can easily change modules in seconds) so it has the ability to quickly modify it’s inputs to allow for optimization of various interfaces. a year ago I got the new Renderer V2 which was a step up over USB.
but with digital things change quickly, and a month ago I got a new server, the SGM Extreme. the Extreme has some special optimization for USB. Also; recently MSB introduced a new interface that optimizes USB and adds fibre to reduce noise, the MSB Pro USB. turns out that with the Extreme USB slightly pulls ahead of the Ethernet with the Renderer, then adding the Pro USB there is now a significant step up over the Renderer.
what I’m saying is that comparing dacs also must take into account of all the interface advantages of each particular dac. and the MSB Select II has a huge advantage over other dacs with it’s modularity and in-house development which promotes, in a very timely way, keeping the product at the very tip top cutting edge of digital interface developments.
lastly; what I compare my MSB Select II to every day is my top level vinyl and top level reel to reel tape. those surpass any other digital choice. the Select II pushes the analog to be it’s best. it’s that good.