Tube integrated amp less than 12" in depth?


I am looking for an integrated tube amp that will fit in my office. I play CD's on an Underwood mod 1 Jolida 100D with Siemens and Amperex Bugle Boys, at low volumes with a Creek 5350 SE and biwired-Proac Response 1s. The sound is great but I miss tubes in the amp..........and it plays 12 hours a day.
Room size 14 X 16 feet.
Any suggestions for that "tube" sound?
The equipment is housed in a lockable closet and cant be more than 12" deep to fit. It is locked as my partner likes to come in and turn the sound off!!:) (Philistine)
springbok10
If you can turn this sideways in your closet, you might have found the ticket. The Audion Sterling runs 12W of SET power, and runs in ultralinear mode at a certain volume output. Thus, you get a smooth midrange and a punchy bass response. Excuse me if my terminology is not spot on, but I think you get the picture. The amp is 9" in width.

http://cls.audiogon.com/cgi-bin/cls.pl?ampstube&1108445089
Thanks, Boa2. Wonderful suggestion. How would 12W work on a speaker of 86 db sensitivity? The dimensions would work out great. I could replace the Proacs with Totem Sig 1s, that I have at home - 86 db and 4 ohms.
Any experience with these amps without horns?
Denis
SETs seem to be the answer - the Almarro 318 may do the trick.
Thanks for your help.
86 dB, would IMO, be a little bit low on the sensitivity scale for a 12wpc amp, if you were looking for anything close to realistic volumes. But of course, a lot depends on music type. I am guessing you do not run the volume high in a home office. If you are just looking for background levels, then it should be fine.