Tube Dac to Tube pre?

Thanks.
Dac and pre have rca so that should cover.
Schubert, you mention "more variables than are wise" and I would appreciate your explanation. Tubes are new to me. Are you saying that having two components with tubes may not match up well?
Thanks for the replies.
Steve

Frank,
Thanks for taking your time to go through this.

"What are you connecting the DAC to currently? Is it connected to an integrated amp (is there a volume control on your amplier) then to the speakers? What's the reason you are adding a preamp?"

Currently the dac is connected to a Marantz sr6006 ht pre/pro with a Bryston 3bst amp handling the amplifier duties for the front Gallo Ref 3.1 Speakers..

I saw major sq differences when I added both the dac and the amplifier to my system. Everything I read indicates that a significant improvement can be had with a seperate preamp vs the ht processor.
Hard to verbalize what I want. Even though my system sounds very good to me I know it can be better. Would like tighter placement of instruments, front to back imaging, tighter bass, a more you are there feeling.
Thanks
Steve

Streaming flac files and will probably continue with flac. Current tubes in the dac are Amperex Bugle Boy 6DJ8. They are an upgrade from the originals.

While we are at this, do you have any recommendation on pre's? I do require a remote and would like it to control source as well as volume though just volume would be ok. Price range for a start: less than $1000

Thanks
Steve