Upgrade Time

There are many ways to go about this and your preferences should rule the day. With that said....

While every integrated is different, most do not have an active inboard linestage, in other words, they are basically an amp with a volume control.

Consider aquiring an amp and a pre-amp. On the used market, you might even consider a pre-owned McIntosh new/recent reissued version of the C22/MC275 combo. It would match up well with the Olympica Nova's as Sonus Faber worked with that combo when developing the speaker. While not the last word in tube goodness, the McIntosh combo would retain its value and demand when you are ready to sell and move up qualitatively. Your Cambridge DAC/streamer would be fine for now as a source only, especially given the opportunity to not use its volume control, leaving those duties for your C22. This would be a good match with your Olympicas and frankly, your next upgrade could come on the DAC or speaker front as an investment with either of those would probably yield better results in the future as the C22/275 combo can scale up another level or two.

It might come as a shock to MillerCarbon but the gear he owns isn't one size fit all for everyone's application. The Raven's won't drive the Olympica Nova's as effectively as a 275 as the Nova is a solid 4 ohm load.

Disclaimer: I am not a dealer nor do I own any of the aforementioned equipment although I have owned a C22/275 in the past. I have heard a Raven amp but have not owned one. They are fine amplifiers but the 6L6 can run out of gas with some speakers and some volume levels. 

Aesthetix Mimas, never look back

worthy speakers, I'd love to hear them.

I encourage trying tubes, and am always tempted by the Raven Blackhawk millercarbon just bought and recommends after actual listening which is quite an endorsement.

One optional feature is their built-in high pass crossover to move the bass load to a self-powered sub or separate amp(s).

I think the speakers are set up for bi-amp so you have future options.

Basically you are saying the Cambridge DAC/Pre-amp will significantly drag down even a $10K level amp...I wonder if others agree with this?

Uh, that’d be yes x 1000!!!  NEVER underestimate the importance of a preamp — it can make or break a system.  The DAC is up there two so you’d be doing a nice amp a disservice on both counts. 

This conversation needs to start with what sound characteristics are most important to you and what you’re looking to improve upon over what you are hearing now.  Otherwise — and as you can already see happening here now — you’re just going to get a wide range of personal preferences that may or may not have anything to do your own, which is basically useless or even counterproductive.  So start by stating your personal preferences and goals and you’ll get much better recommendations here.  My $0.02. 

@soix I hear what you're saying and it make sense. I'm at the exploratory phase at this moment so the wide range of recommendations is actually helpful. I wish I could say I'm looking for exactly XYZ but I can't. Actually I don't wish that because I still have some fun ahead of me figuring that out. It's good to hear different perspectives so I don't get sucked into one line of thinking. Again, I don't know what I don't know here as I'm moving up into better equipment for the first time. The Olympica Nova's have not even arrived yet and this upgrade doesn't need to happen immediately. So in the meantime, it's fun to think about and research all the options.