What should my next upgrade be? Your best experience


I have the itch to upgrade my system now that I've been in it for a moment. I mostly stream (Deezer) or listen to CD/SACD content. I occasionally play vinyl but rarely, I'm sure I will continue to grow into it but am not looking to improve the TT now. I listen to mostly Classic Rock, Jazz, Blues, and Indie music. I'm listening to Talking Heads (live acoustic) as I write this. The Marantz PM-11s3 has zero issues pushing the Monitor Audio Silver 8s, it actually is a little over kill for them I think, as it has complete control of them, never losing its composure.  So there is zero chance the PM-11s3 is up for replacement at this point.
The room is 14'x40' with 12' ceilings. The system has no issue filling every inch and at high volumes so no issue there.

Current system is -

Marantz PM-11s3
Marantz UD7007
Marantz TT-42 
Sonos Connect
Monitor Audio Silver 8's
Analysis Plus Purple Oval 12 bi-wire
Tributaries 8AB XLR (UD7007 to PM-11s3)
Tributaries 2A RCA (Sonos to PM-11s3)
CyberPower Conditioner

The obvious direction, it seems to me, is speakers? But am I missing something? Would upgrading to a real audio quality conditioner with an upgraded power cable give me something more and set me in the right direction for future upgrades? 
Or am I not where I need to be with cables? Can I make a sonic improvement by upgrading speaker cables and/or interconnects while again getting myself in a good position for future upgrades?
I have to admit that this is the best system I've had and I do love every minute of listening to it.... Its fast, accurate, and punchy yet it has great sound stage and its not clinical. It has that Marantz sound/charm (warm but not clouded).
I know posts like this are common and beaten to death but my system is unique as it is mine and probably not exactly like anybody else's...
Never-the-less, I know I'm nowhere near where most of you are! And I know for a fact I have much less knowledge than most of you. I'd like to keep bettering my system, moving towards the personal listening nirvana if you will. So what direction would you head in if you were in my shoes?
264win
I agree a good high resolution capable DAC will likely help here.  But the best upgrade I've done, short of replacing speakers, is to add left and right REL subwoofers.  Improved every aspect of sound quality including vocals.
Hello and thank you everybody! I have learned a lot from all of your posts and I have taken the time to reflect in what everyone has said, as I take all of your replies seriously. I also know they come with not only the passion we all have for Audio but the experience this passion comes with!
It seems to me a general consensus that I need to upgrade the streaming I have. It looks like I unfortunately cannot use the DAC in the UD7007 (which I’d love to do) because it does not have the correct inputs sadly.....
But you know what does?!?! A Marantz NA-11s1!!! lol I guess I’ll just dive in!
Here is the review for it and it does have both a Digital and Optical input but also a network that will rout the Sonos stream direct to its DAC, which by all means seems to be a pretty good unit?

https://www.stereophile.com/content/marantz-reference-na-11s1-network-audio-playerdac

Now, I’ve also heard the thoughts that I should look at the listening room. And I should and will! It is a A/V or should I say TV Room lol But I can see multiple areas that I can improve on, even if they are just small improvements they will improve the room never the less.

Now to the Sub suggestions.... I think I’ll wait on adding any subs to the system. I can honestly not say if and how much of an improvement adding Sub Woofers to the system will add? What I will say is that the PM-11s3 is VERY underrated at 100wpc into 8ohms and that it will double down. The Silver 8s are a 4ohm speaker that are getting just bullied by it and they play both loud and low. I’d describe them as a bottom up speaker. With the Silver 8s placed 20" or so off the back wall they provide very good bass. And very good bass at low volumes. This bass is fast, tight, and deep. I’m throughly happy with it! It shakes the floors 30’ away lol

Anyway, please let me know if you think looking to add a NA-11s1 is the right or wrong move as I appreciate your thoughts!

Thanks again, Charles
Hi Charles, I sympathize with your predicament. I'm wondering if you are considering the Marantz NA-11S1 because you really like the brand or something else? The technical stats seem a little anemic for 2017, not that anything is really future proof this day and age. Or is the 24/192 more than sufficient for Deezer? (I've not used that particular service) For those dollars you could get something like a PS Audio DirectStream Junior DAC for instance? 
@264win, 

If you prefer to stick with Marantz, NA-11s1 would be a great choice. Since you already enjoy Marantz house sound, you will get impeccable synergy by pairing 11s1 with your PM-11s3. 

I believe you can order one from a online retailer with 30 days audition return policy. 
What is your budget?  That's the most important thing in recommendations.  I personally will have friends get the Codex DAC/headphone amp and have them run it directly to the amp unit they can afford a good preamp.  The Chord Hugo 2 is another good DAC, but costs more than the Codex which is 1800 list. The Marantz is about 2800 online.  You can get a nice streamer for 500 or so.  Digital is changing so much and that's why i personally go for separate units so you can upgrade as needed or as you want and not get clobbered as used digital usually goes down in value much quicker than anything.

I agree that the Marantz unit isn't up to the same speed as newer DACs'.

That said, do you even have music that is more than 24/192?  I highly doubt that you do or will during the life cycle of this product. It will do native DSD, which you may or may not have, but it doesn't list the specs.  I'm sure it's the lesser of the playback specs though.  

For the money of the Marantz, I personally feel that you can get much better quality, but it will be in a couple of boxes.  YMMV