Someone help me Sound Too Thin ?????

Can anyone help me !!!
I have cd player - Cambridge A500se
amp - Audion Sterling ETSE (el34 penthod single ended in triode cercuit ,class a ,no negative feedback, 12 watts/channal, able to chage to
kt88 18watts/channal)
speakers - Triangle titus 202
interconnect - Mit terminator4
speaker cable - Audioquest crystal biwire(old model)
tube input - sovtek 6922
drive tube - GEor Svetlana 5687 or Amperex 7119
tube output - Svetlana el 34

I love the sound of this system except it is sound " so much too thin and light weight " for me.

At first, i thought my amp has too less watts but i already try with 45 watts rotel intergreted amp and the sound is even thinner.

I like" romantic sound, full body, laid back and warm
sound too thick and dark tone" is ok for me .
I listen to a lot of classic jazz and vocal jazz 80%
classical 20% , i want to have low frequency down to at least 50hz

What speakers is suite my system and my taste? (i can change amp if my amp cannot drive these speakers)

What amp is suite my system and my taste?

- If i change the speakers to PSB 4T,stratus bronze or JM Lab 715 or vandersteen 1c, 2b, is my system gonna have more body?

How is planar spekers sound? is it gonna suite my taste?

If i change the amp to NAD C-370, is it gonna work for me?

Thank u very much
Paul