Marshall did not supply any leads and I am going to have to make some up, either with proper speaker cable, or mains lead. Possibly, an earlier design fault may have been sorted out in newer models - I really don't know. This is simple piece of kit. I suppose it would be nice if it had either a speaker emulator or a DI output. That way it would cover another base.
Sounds are rock, country and blues.
However, it is a simple idea but if your amp sounds crap, this will make it sound crap more quietly. I can't see any point in using it with a solid-state amp, either. This is a speaker attenuator by Marshall. Very easy to use. The unit has a rotary knob in the front panel that adjusts the level of attenuation in 3 dB steps.