Preamps with separate L/R volume controls


Does anyone know of quality preamps, other than Audible Illusions, that have separate Left / Right volume controls?
beisner
Morrison Elad, no longer in production but sometimes available and very good.
MFA Magus (three versions). In addition to the left and right controls, it has a main volume dial. Mine works fine but they are impossible to find.
Just out of curiosity, how's separate volume controls different from a balance control, functionally speaking?
@kalali no functional difference, but typically some implementation difference.