A high power broadband amplifier with variable output power and switchable pre-amplifier (not variable), this is a replacement for the KL500.
The features are all the same as the KL405, but the amplifier uses Mosfet transistors.
The output can be adjusted in 6 stages, from approximately 60W minimum to 250W maximum (AM/FM).
Note: new stock is now in a black case.
For full details download the instruction manual.