Roon is inferior sound quality wise on Innuos gear and certainly not in general. I am sure Roon sounds wonderful on other server/streamers. Innuos processing power is purposefully designed to be lower so as to minimize noise. That is one reason they sound so organic and natural. If one owns an Innuos server they have not really heard what it is capable of until they run Sense. Roon certainly sounds good on my Innuos, but falls pretty short sonically to Sense.
One must know their goals and desires with streaming when deciding on a server/streamer. I don’t care about DSD or DSP and really like the linear power supplies and lower processing power design goals of Innuos. This keeps noise to a minimum. I have heard more detailed servers than my Zenith 3, but it’s hard to beat the natural tone and musicality on my Innuos for the money.
I still run Roon for background music only as I use Roon radio to learn about new artists.
If one wants to use DSP heavily and cannot do without some of Roon’s features, then Innuos would perhaps not be the best choice