CD player output via DAC chips vs tube tech

Maybe you're not familiar with them but there are tube based standalone DACs . I'm listening to my 2nd system right now with a Modwright Elyse R2R tubed based (6922) DAC. There's any of a number of others - MHDT DACs, Aqua Acoustics LaScala, Lamipzator DACs, Border Patrol, to name a few brands.

Also , there are many solid state DACs that sound as good as if not better than tube DACs . I have a Mojo Audio DAC in my main system doesn't take a back seat to my tube DAC.

^^^^^ 
OK you got me, 
Yes I was completely unaware of any of the tube dacs you mention. 
Thanks for your kind imput,,I'll take a  look at the units you mentioned.
But as for SS DACs,, I'm a  tube guy, just neurotic about having a  tube in every component.

The opamps are in BOTH channels.AFAIK
also agree the BB 1794 is world famous as best DAC chip ,, or so says Underwoods web site,
But trust me the balanced DAC BB chip sounds like crap next to the unbalanced RCA outs, 
Massive sonic dif.
I havea  Cayin cd17 Mark1, with both unbalanced /balanced out,, in my 16 yrs usage,, i never once considerned employing balanaced circuit... i made a few upgardes in front cap section and on last caps of unblanaced,, The sound is 1st class.
Same here with this S3. 
The unbalanced which has the ops in the unbalanced circuit (not sure what Underwood is thinikng saying the ops are for the balanced/DAC circuit,,cause he is wrong). 
The unbal sounds far far superior
= Tube outs on a cd player woops any DAC, 
Hands Down..

and thats also true, the DCA chips has something to say in the unbal outs, Look the Cayin 17 has the same design as the S3. So I read what Underwood mentions, about ops are for balanced,,so i took out all opamps,, and the circuit coughed up badly,,so if the ops in the cayin voice through the tube unbal circuit= same as S3
I really need to know before hand, as i plan to order Sparksolab Descrete ops,, I believe Underwwod mentions some (all?) are doubles, Andrew fetches $70 each for the doubles..
Its a hefty price for 12 ops,, that is if the ops voice little value in the tube unbal circuit.
I plan to take it to  Richard Gray and see if he can tell me worth swapping out stock ops for Sparloslab.

Lets say it take all duals
12X$70
See what I mean, thats 3/4 the cost of what i acutally paid for the C3.
The Sparkoslab decrete made a very nice pop in the Cayin 17(has 6 ops),,which had BBopa627's in it,, these were top dawgs back in the day.
They are now obsolete with Sparksolab Descrete Ops on the market. 
Sparksolab Descrete murdered off Burr Brown ops.