Does a Tube Dac make sense?

@stibin,
You can have an all tube audio signal path or an all transitor audio signal path and be happy with either. Just depends on what type of sonic presentation you are seeking. Within the realm of tubes there’s very noticeable variation in what you’ll hear. So called "tubey" to not so "tubey".

For example an Audio Research component using 6H30P tubes would sound different from another brand’s tube component using a 6SN7 or a 12AT7. So even though utilizing tubes you’d still hear a different signature. Same would be true for mixing different transistors. Krell doesn’t sound like Jeff Rowland even though both are solid state.

You say that you are a newbie, no problem you’ll learn to appreciate the many variables that factor into High End audio. We all continue learn as we gain experience along the way.
Charles

I have got very limited experience with Digital Replays in my Home System, but have been able to Visit Different Homes and Events and as a result have auditioned/been demonstrated many Digital Front Ends.

My most impressive CDP is a heavily modified Sony Model that has Valves Incorporated, Multiple Power Supplies throughout the Channels Circuitry, Insanely Priced Cap's and Bespoke Wound OCC Silver Transformers.
This CDP has been auditioned by a variety of experienced HiFi enthusiasts and it get very good appraisal.

Prior to the past year of enforced limitation to travel, I made it my goal to learn about how different Digital Devices can present a  Replay.

Some I was totally impressed with and others were not so attractive.
 
I have interrogated for a few hours a Denafrips DAC hooked up to a £5000 Streamer, being played through $30 000 Amplification and 
£40 000 Speakers.

I have also heard other Digital Devices in very good systems from
£20 000+ up to 150 000+ in value where the Digital Devices from the  Brands, MHDT, Soekris, Wadia, Soulution, have been in use.
There are probably others as well, as their are always Digital Front Ends at the Events I attend.

I myself have chosen as a DAC, a Bespoke Built DAC produced by a EE/Builder located in Bulgaria.
This has left a very good impression for a very fair outlay.
I am Wed to this hooked up the PS Audio Transport.

This marriage has been heard by some of the owners of the above equipment, and even undergone Tube Rolling in their company.
There are to date not any concerns being raised about the presentation that is on offer, the PS Audio > Bespoke Built DAC leave a very positive impression.

In my experience there does not seem any reason to not use a
Tube DAC. 
Is a Home Loan Available of a few Devices to gather the capabilities of a Model in the Home System ?

Don't overlook a very good quality Power Cable, the influence that one can offer when used on a CDP, CDT, or DAC can be very impressive. 
The Transformation can rearrange any assessments without the Cable exchanges in place.    

     

Well, I am using a Audio Mirror Tubadour III tube DAC with a Aric Audio tube preamp. Both have improved my systems sonic presentation in a way that I like. 

A tube dac vs a non tube dac is just another option for you to consider in your search for the sound you want or like. It is no different than comparing a chip design dac bd an r2r dac. Some will like one delivery over the other. What matters is what you like. I think what your concern is is that a tube dac going into a tube ore will cancel each other out. That is not the case. Look at it as a chain that starts from the wall outlet and ends at your ears. Anything you change, add, or remove in that chain will effect the sound you hear. Enjoy the journey and the music.

A tube dac vs a non tube dac is just another option for you to consider in your search for the sound you want or like. It is no different than comparing a chip design dac to an r2r dac. Some will like one delivery over the other. What matters is what you like. I think what your concern is is that a tube dac going into a tube pre will cancel each other out. That is not the case. Look at it as a chain that starts from the wall outlet and ends at your ears. Anything you change, add, or remove in that chain will effect the sound you hear. Enjoy the journey and the music.