SE Class-A Amplifier. The direct-coupled (no coupling capacitors) two stage circuit.
Input: soviet "6Г7" (6Q7) triodes
Output: soviet "6C4C" (6B4G) directly-heated triodes
Power Supply: soviet "5Ц3С" (5U4G) as (+) rectifier, soviet "6H9C" (6SL7) as (-) rectifier