Yes, too low a gain on a TDA2030A makes it unstable. The important metric is the 'noise gain' - here you have a noise gain of 3.2 which is too low a figure.
Quite a few chip amps become unstable with low gain.
I got caught out with tda7294 when I lowered its gain to adapt for a valve front end.
I found putting 1000pf across + and - inputs tamed it.
Yes, too low a gain on a TDA2030A makes it unstable. The important metric is the 'noise gain' - here you have a noise gain of 3.2 which is too low a figure.
