I have the LS 25MKII. I did not do a direct comp with the BAT, but I can tell you that the LS25 is a class A+ preamp. It will not be the weak link in any system at any price in my opinion. The new J-fet input is very quiet and makes the LS25 one of the quietest tube preamps made. I particularly like the selectable gain settings on this unit. The new 6h30 tubes do their job well and are powerful as well.
