I have a pair of Vox Lil Nightrains that I am about to get shot of.
They have had the treble mod done , so they sound much better , and Martin at MJW converted the headphone jack on the rear to a power amp in socket , so you could use them with a preamp or a Pod type thing.
I was trying to do a mini Brian May set-up with 3 amps (one for main and the other two for delays) but have run out of space for such rigs and am having to rationalise my rigs.
As Ben said they don't do metal - unless you feed a preamp or modeller into the power amp facility I had added.
Good fun though and work best with strats and teles, just like big Voxes do in my opinion