In my opinion the by far best and most authentically sounding and behaving simulation of this legendary preamp.
A lot of additional features make this plugin even more versatile than the real unit. In fact you get a complete, well equipped rack tube amp system plus a lot of good sounding and working effects.
Can be used as a preamp alone, with the included power amp and cabinet section as a complete (rack) tube amp or also in combination with another power amp.
Beautiful, highly dynamically reacting British clean to crunch tones, authentic, typical British overdrive to high-gain tones with a very flexible tone control and a lot more.
I just have been considering to buy the real preamp, but this plugin offers even an additional complete professional rack for much less money and sounds, behaves and reacts - in my opinion - exactly like the real device, so the decision was easy.
A must have for every Marshall sounds fan, I think, but not only for them.