Found a couple of "LM1875T"

Great advices Daniel!
UTC is selling indeed 2030and 2050 chips, but are certain that those chips are on par with the ST authentic tda2030/2050 chips?
I would stick with the real ti lm1875 chips which are still available to purchase from the trusting etailers.
UTC chips and transistors are absolutely fine....
Not fake, not poor quality, just generics.

But if TI still sell the LM1875 then fine.

I have a feeling TI might bring back other things, since there is demand enough for legitimate Asian companies to acquire the rights to older devices and produce them to service a demand TI/ST etc did not think enough for them to sustain profitability.