Hm, thought it had that, but just looked at the pic of the back panel and there definitely are no toslink inputs. It is going to be a world of trade-offs for you for what you are looking for. I don't think a single device is going to have everything you are looking for.
I have the same issue with my integrated amp - no bass management or sub pre-out, so I hooked up one sub via speaker level outs, but it has to be manually crossed over and level set. The other sub I have does not have speaker level inputs. Same will occur on a stereo receiver, they have sub pre-outs, but they are not bass managed.
The Audiosource Amp100 is an amp that has just a basic volume control on it, but it is 50WPC and has no sub out either. I have one of these for my garage and it is surprisingly powerful. No problem filling my 24x24 garage with sound from two bookshelf speakers.