I agree with the idea that it sounds like an 800 blended with a Recto, but to me, I dunno, it sounds like the worst elements of both. It has the extreme preamp low end of the Recto but doesn't have the massive wallop and slice of one. Instead, it's got the tight and relatively narrow bandwidth of the 800, but without the stringy clarity and detail of an 800.
The circuit sounds like it starts out loose and gets progressively tighter and more narrow as the signal moves through the amp, but because that initial looseness is baked into the sound at the beginning, the sound always keeps its undefined nature. A Recto is flubby also, but it doesn't filter out the highs, so you can use boosts and things like that to reduce bass and get your highs back. Can't really do that with a VH4.
Every single well known artist who uses a VH4 blends it with something else. I don't think that's a coincidence. It's a "big" sounding amp and I can see people blending it with other amps to add thickness and interesting complexity to the mids and that kind of thing, but relying on the VH4 for your entire core tone has always seemed to me like a bad move.