IMO there should be more quality solid state amps in the $500-1200 range especially with the increased price of tubes. Having adjustable power output sections and direct outs with quality IR cab sims is great too. Basically like the Fender Tone Master series, but would be cool to see other brands or even just some original designs (maybe like the Yamaha THR100).
Unfortunately I think consumers see the word digital and think "oh it should cost the same as the Line 6 Spider and Boss Katana", so they don't seem to sell well, even though those amps use cheap MDF and crappy speakers and the cheapest components they can get away with.
I think exactly like this, posted about a few years ago on marshall forums about this
But the battle is lost. Solid state amps still cost a great deal amount of money. So instead what we have is Orange Crush and all similar units which I find terrible. Peavey Valveking head or the combo would be the best solution but it's discontinued I think. Today there is no hybrid or solid state I can recommend other than Bluamp honestly.
Look at the Bluamp, let's say the power tube adds 15 euros to the final price. They are either profiting 400 euros per unit or the cost of solid state is high. I believe the cost of solid state is high, a decent class D is not cheap or at least not as cheap as we would like to be.
Where I live there is one guy making a device similar to Bluamp but he uses two preamp tubes and class D. It's 80W at 16ohms. about 55 at 8ohms. I think you can be louder than your drummer but that is about it. The price is around 400 dollars. It does Marshall JCM almost as good as the real 100Watt 2203 but it weights 2 kilos.
The secret sauce of Bluamp is the preamp, not sure how they get the high gain tones using solid state preamp tier pedal circuitry. For 850 euros the Fractal Am4 or FM3 is a better purchase in the end in my opinion
Or: 200 dollars for Valeton GP + buy the 4x12 of your dreams + a decent solid state power amp. The valeton + 4x12 + power amp should cost around that 900 euro/dollar mark
If you want Boss Katana to sound good you would need to put a good guitar speaker there but the modeling of the Katana is not like GT1000 or Gx-100 it's an older tech, in theory it doesn't translate well because the digital modeling is meant for FRFR speaker while Boss Katana and the Waza Craft speakers are guitar speakers.
The best we can do is hope for companies to make studio monitors in 10 and 12 inch configurations. Yamaha HS8, JBL and Kali monitors sound amazing, their 6 and 8 inch units for home use is perfect if you ask me, I usually recommend that instead of a Marshall cab or a 699 dollar Hypersonic EVH FRFR cab. Your guitar will sound great and as a bonus you have a nice pair of studio monitors
These monitors are not loud enough for band practice unfortunately. On a side note if Fender release a mini version of their Tone Master Pro multi effect units it's going to be a great thing for those who are not happy with Tonex and Neural DSP. It has potential to be "Fractal but simpler". The issue of lacking a power amp still remains though. Hopefully chinese companies copy that Wempler/Synergy design and make power amp for the masses