If you're looking at this ad, odd are you already know what this amp is.
It comes with cover and foot pedal. 100w with switch to lower to 50w.
It also has a built in power scaling attenuator, noise gate, boost and reverb which all work incredibly well.
The amp also features Marshall's auto bias. You basically throw new EL34 powertubes and press a button and the amp self biases itself.
It's a shame Marshall discontinued this amp. It is one of the best takes on a modern plexi. It retains the classic tone with useful features and low noise floor.