How do you add color?

To clarify my post, I understand what you mean about adding color. But what I am suggesting is components which allow the color to pass through. To be dramatic, my Delta Sigma DAC is like this blinding bright white light putting a laser beam through the music. Dropping in my NOS DAC, the colors in the music suddenly appear. Neither is wrong, just depends on taste and the kind of music being played.

The most natural way to ADD color, in my very limited experience, is a tube amp. Preamps and source components add a more color but usually some type of haze obscuring music as well. As roxy54 said, softer sounding speakers which place higher emphasis on tone, not detail, can also be perceived as more colorful.

Color is in the details too not only in tone and timbre. You want it all. Tube preamp is very important, in addition to power amp.

As for DACs, why would any audiophile want to listen in digital what was recorded and mastered in analog and then try to get as close to analog source as possible ? Sounds strange, doesn’t it ?

If it was recorded/mastered in digital then, well, you have no choice, though good records still sound better even if the recording/mastering was done in digital.

@arafiq 

Consider adding Lampizator’s soon to be released Poseidon DAC between your Innuos ➡️ Vitus and call it a day! 

Foz-SSX

iFi Micro iTube2 Tube Buffer

You need the function to switch them in/out without dicking with wires. You'll end up spending bux on cables before you get "better" SQ than you have now.  Definitely different.

Great dacs like the T+A 200. Sound very natural with better detail then tubes ,

different  interconnects too from the dac can influence the sound .

myself mod the Speakers Xovers which is a Huge weak spot in most speakers 

including ones over $30k. Most use average at best parts quality especially if under $15 k that's why most speaker companies don’t mention it for there is nothing 

to Brad about they don’t test 10 different type of capacitors ,just sound decent good enough l in my latest build I spent over$1600in parts ,average speaker$500 at most. Just take a a driver to see for yourself.  TonyGee of Humble homemade hifi capacitor test  is over 90% accurate with his ratings and Sonic character.