Best of these integrated amps...

If anyone is thinking about plugging in an external DAC into a Devialet they don't understand what Devialet is all about. I sincerely hope whatever DAC you use does not colour the sound.
For my part, one of the benefits of Devialet is that it can accommodate two phono inputs, as my turntable has separate arms for mono and stereo. The analogue signal goes through A/D  and D/A conversion and still sounds analog when it comes out the other end.
 A/D  conversion is not unique to Devialet, there are plenty of active systems that require it, but I appreciate some people would be prejudiced against it.
The benefit of the new Devialet units is the stunningly good streaming card, which sits next to the DAC and, like everything else in Devialet including in particular the power supply, should be considered as one unit. Virtually all of my listening is streaming  in high definition and the days of thinking of the DAC as a discrete unit are a dim and distant memory.

Simaudio 700i 

https://simaudio.com/en/product/700i-integrated-amplifier/

@flip49er

Out of those 3 choices you listed above I would rule out the Marantz PM10. However, the Marantz SA10 CD/SACD player is awesome but the PM10 analog integrated amp isn’t that impressive especially considering its retail price of $8k brand new. Not worth $8k IMO. 

My system had been good to me but ever since I moved into my house with lower ceilings, the sounds has been muffled and not getting the staging I wanted. I thought time for whole new system, new speakers, new amp, new TT, new pre-amp, new wiring, new everything. Fortunately I started with replacing my 18 year old Krell 500i amp with Devialet Expert 220 pro. The speaker matching breathed new life into my B&W 802 N speakers with clearer separation and crisper highs and mids. Also the warmth and clarity with my phono was amazing (after fine tuning phono stage configuration).  I connected my Wadia 830 CD player and the a/d is impressively clean.  And I was ready to dump everything. Wow was I lucky. 

The visual gravitas of ML or others is undeniably luring. The Devialet is sleek, chrome, laptop-size - diametric opposite stylistically. I wondered how this thin sculptor was going to drive power hungry 802s, but the Devialet is amazing. Devialet integrates old school equipment with 21st century precision, extending new life. 

Audiophile people have difficulty with Devialet because it cannot be judged by their normal criteria. This became clear to me after meeting their Chief Engineer.
Firstly, it started with a bored telecoms engineer designing the perfect amplifier (or his version of one) in his spare time. It was an A-D hybrid, which as a Quad user sounded remarkably familiar. He then designed a really very good power supply. So he had some patented technology and decided to get together with some folks and make an audio product. Completely the wrong way, because most audio companies have nothing new to offer but customers to keep happy, whereas they had something good and no audio company. He partnered with a finance guy and product designer, two things often lacking in audio companies.
So they sit down and decide how an audio system should work - small and aesthetic (can be hung on the wall), all inputs and outputs customisable, software driven, all digital processing (no pure analog path) all elements designed purely to technical specifications. No claims to be "voiced" etc., it just takes signals from anything and amplifies them as accurately as possible with the minimum amount of distortion.
A key factor was almost fully automated manufacture, which keeps costs down and meant it could be made in France, not China, with optimum quality control and customer service. No soldering irons in sight.
Worst, audiophiles can’t really critique individual components and you can’t look inside and everything really all works together.
dCS aren’t much different, they’d had their ring-DAC for years before they went into audio.
A major design factor was creating the best remote control on the planet. I’m told it has a huge impact on regular (non-audiophile) customers.
I like it. It works for me. It’s hidden away so I don’t look at it, but the space saving is also a major issue. People who like stacks of boxes, cables and tweaking should look elsewhere.