2 manufacturers making hybrid integrated amps come to mind, there may well be others, LSA and Pathos. I had great hopes for LSA when I read reviews of them, but was quite disappointed when I auditioned a second hand LSA Statement.
I have a Pathos Inpol2, which I am very happy with indeed. Not very powerful, 50 Class A watts, but very detailed and refined sound. The company do a range of Class A amps, the Classic, TT or Twin towers and Inpol2, in order of power and cost. They also do a more powerful Logos Class A/B amp, which I don't think is in the same league.
I have a Pathos Inpol2, which I am very happy with indeed. Not very powerful, 50 Class A watts, but very detailed and refined sound. The company do a range of Class A amps, the Classic, TT or Twin towers and Inpol2, in order of power and cost. They also do a more powerful Logos Class A/B amp, which I don't think is in the same league.