Simple, small footprint tube preamp ?


Please be kind. I'm pretty ignorant about computer audio. My source is a laptop, into a Sabre DAC, to the amplifiers. 
I'm wondering if there is a more simple, small footprint tube preamp that could be set on my desk near the laptop? I'd prefer to be able to tube roll, but know NOTHING about this really. I'd prefer to spend less that $500, but $1000 is okay. Normal sized chassis will not work in my application. Kits are okay too. Thank you
flaxxer
Post removed 
Thank you SO much. You helped me realize, what I really need is an all tube gain stage. I'm assuming a small preamp works the same way.
I believe what you need is a all tube integrated amplifier (pre+power amp in single chassis). 
@flaxxer, since you want something smaller in chassis size and want to tube roll, would suggest you try out the Chinese clone of the Marantz 7 tube preamp. Its a line stage only, has excellent sonics and you can tube roll and capacitor roll to your hearts content.

Remote PRT-07B stereo 12AX7 Tube preamplifier base on Marantz M7 preamp L12-46 | eBay