The old Audible Illusions L-1 linestage has dual adjustable gain controls (knobs on the front)in addition to the volume control. Nice tube pre that utilizes two 6922 tubes. They go for around $500-600 on A'gon.
The Canary CA-800 and CA-880 both give 9 db. I can vouch for the quality of Canary products overall - I use their 801 preamp and 339 amps. Both are terrific.
Any Blue Circle preamp that has the Shallco stepped attenuator has a gain switch (internal). On the BC3/BC3000, the high gain position gives you 23.5db, and I believe the low gain position gives you 11db.
There are a few with adjustable gain. I believe at least one Blue Circle pre has that via an internal switch. The Wright Sound AG1500 I own has a two position switch in back. Either would be excellent choices as a pre in many applications. You may want to list the rest of your system and why you are looking in that direction to get more focused input from others.
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