Safe to use TDA2030A 18W Digital Audio Amplifier Board DC 5-12V with arduino?

Anvay:
TDA2030A 18W Digital Audio Amplifier Board

Sound like a corrupt ebay seller statement.

The TDA2030 is an ancient analogue audio chip, commonly used in 5watt guitar practice amps.

Expect no more than 4watt RMS with a 4ohm speaker on a 12volt supply.
And 2watt RMS with an 8ohm speaker.
Leo..