Housed in a ZIP-22 (Zig-Zag In-line Package) or DIP-22P module, which facilitates easy mounting on a heatsink.
The STK411-210E was a staple in 1990s and early 2000s audio equipment but has since been by Sanyo/Panasonic. Stk411-210e Datasheet
It supports Bridge-Tied Load (BTL) configurations, allowing the two channels to be combined for high-power mono output (potentially up to 400W depending on the setup). Application and Sourcing Guide Housed in a ZIP-22 (Zig-Zag In-line Package) or
The module includes internal driver stages, biasing circuits, and muting capabilities to eliminate "pop" noise during power-up. Stk411-210e Datasheet
Approximately 105 watts per channel (into an 8-ohm load).
Always use high-quality thermal paste and an appropriately sized heatsink. Operating the IC without a heatsink will cause immediate and permanent failure. Ic Stk411 210e(968) - Alibaba