Unfortunately friend, there is no replacement, the possible solution would be to add a new amplification stage audio output, it seems to me that it is of low power but if you indicate the voltage to which it is fed, it is integrated in your board and the size of the speakers could suggest a integrated I wait for your answer
thanks for your attention friend Leasmacruz, the voltage is 6V with a 5w speaker, I was thinking of putting a TEA2025B, I don't know what you think?
cordial greeting
The ASD is stereo and the one it has is mono unless you modify everything and add an extra speaker.
With the TDA7052 you have to make very few modifications is 1W as the original and is powered by 6V.
Tea 2025 is fine if it is true that you have to modify some things and the output of this is 5 watts I upload the scheme
use the second circuit proposed and it went sounding ok, thank you very much for the valuable help and interest