This IC chip was designed specifically for use in power boosting applications in automobiles. It is self protecting against short circuits and thermal problems.In the bridge configuration shown it will deliver 20 watts of power into a 2 ohm speaker operating at 14.4 volts.
The TDA2005 isn't a hi-fi amp, it is a car radio amp. Its distortion is typically 0.3% (1% max) as a 2-channel stereo amp, up to 6W RMS per channel into 2 ohm speakers and a 14.4V supply.
If you want very low distortion then use a hi-fi amp IC. They need a supply voltage much higher than a car battery and drive 8 ohm speakers.