Shemy Usilitelej Lanzar -

It features a symmetrical differential input stage, a voltage amplification stage (VAS), and a powerful output stage usually based on Toshiba 2SA1943 and 2SC5200 transistors.

YouTube · Radioblogful. Видеоблог паяльщика Building an Amplifier. Part 12: Lanzar: Review and Assembly YouTube · Vimay Channel Power amplifier Lanzar - output power, tests and tips. ch3

The Lanzar design is a classic time-tested symmetrical circuit utilizing bipolar transistors.