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
I’m a proud owner of an Audio Note system, and today I bought a Musical Paradise tube amp for 450 dollars as a back up amp. Bought NOS tubes on eBay and Upscale Audio for a total of 680 dollars. I’m pretty exited as a sound engineer told me two days ago it was fantastic.
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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).