Thanks for the advice guys … as a previous user of the SVT CL head and 610 cab I don’t think I found that any better than my current ABM600 rig for the expected venues
I’m sure the V4B is a superb head but it would not give me much more than my ABM600 already provides and the ABM will go louder I think by some way.
So in summary I’m going to park any ideas of adding a tube head and be happy with what I already have !