You can still find class A/B amps out there that are far less than an all-valve 80-lb monster. I use an older Eden WT500/800. That's a WT500 dual-powerblock amp that has been upgraded to 400-watts rms @4 ohms per side and will bridge at 800-watts rms mono. I run it bridged at 800-watts into my DNS-410. The original WT500 (250-watts per channel/500-watts bridged) weighed 20-lbs, my upgraded version is closer to 26-lbs primarily because of the larger toroidal transformer. I keep my amp in a rack which makes it heavier yet.Seems like there isn't a lot in the amp world between the lightweight class D amps and the SVT beast at ~ 80 lbs. The Milkman Half and Half is around 12 lbs and a standalone unit. Even considered getting a head case made for my Trickfish 1K to give it the appearance of a large amp but I need to look at it and see if it need side vents. Yeah, I know it's stupid, why would you want something bigger / heavier? Maybe partially for aesthetics, looking to simplify to cabs / head / bass. The little bump on top of the cab is a technical wonder, but kinda silly looking. The lead sleds are ok, but most of those are out of production and now getting some years on them. The SVT-7 PRO was a good format, but unreliability killed my like for that amp. Thunderfunk - interesting, but I've heard there are issues with support if you ever have a problem. I've never played a V4-B, maybe I should try that.
There are still a fair amount of Eden WT (World Tour) series amps out there that weigh between 19 and 26-lbs. You can buy a new Eden WTP (World Tour Pro) series amp that is no lightweight too. They are the WTP-600 at 28.6-lbs, and the WTP-900 @ 34.1-lbs. So yeah, there are still some heavier, more impressive looking amps out there to be found if you want them.