Monoblock single-stroke amplifiers of the 4th level. Power 22 W, class A, without feedback with parallel activation of the output triodes 300B. Double C-cores made of Ultra HiB plates with copper primary and silver secondary windings, signal capacitors made of copper foil Audio Note™, 1 W tantalum resistors, Silmic and Black Gate decoupling capacitors. all internal wiring is with a silver Audio Note™ cable; a set of lamps for two Kassai monoblocks: 4x 300B, 2x NOS 6SN7, 2 x NOS 5U4GB.