Lamm LL2 Deluxe....

If David Karmeli weighs in, perhaps he could help. Maybe Vlad could add the attenuation switch. Worth finding out. Not sure what sonic differences exist between the 2 and 2.1
I've owned various Lamm gear over the years and have been very happy with it. Service and support has been great too, despite the fact that it is essentially a one man show (though Vlad's wife is terrific in coordinating things). 

Rox- glad that worked out for you. When I bought my Lamm gear, all used, I had Vlad go over it. He didn't charge much to replace a few parts on the amps, and updated my line stage- the L2- to the then current spec. They are very nice people- Elina is really terrific at getting stuff done, and if you catch Vlad, he can be charming as hell. All the work is done in a small residential duplex in Deep Brooklyn. Until recently, I lived in NY, so we'd drive stuff over for repair or a check up. (I had Vlad go over my amps before I moved, to avoid the burden of shipping from Texas). 
Good luck with it. I'm sure you'll be pleased, and if not, there is a solid market for Lamm products. 

You bet. I hope you love it.