Description (taken from ST datasheet)

The TDA2030 is a monolithic integrated circuit in the Pentawatt® package, intended for use as a low frequency class-AB amplifier. Typically it
provides 14 W output power (d = 0.5%) at 14 V/4 Ω. 

At ±14 V or 28 V, the guaranteed output power is 12 W on a 4 Ω load and 8 W on an 8 Ω (DIN45500).

The TDA2030 provides high output current and has very low harmonic and crossover distortion

Furthermore, the device incorporates an original (and patented) short-circuit protection system comprising an arrangement for automatically
limiting the dissipated power so as to keep the operating point of the output transistors within their safe operating range. A conventional thermal shutdown system is also included

https://www.st.com/resource/en/datasheet/cd00000128.pdf

Price is for a pack of 3