The video above shows the KL 405v in action, the KL 405 in this listing has the same performance, but no fan.

A high power broadband amplifier with variable output power and switchable pre-amplifier (not variable). Come with Cooling Fan
The output can be adjusted in 6 stages, from approximately 50W minimum to 200W maximum (AM/FM)

• Frequency: HF (works better between 20-30mhz)
• Input energy/power: 12-24 A
• Input power: 1-10 W AM/FM
• Input power: 2-20 W SSB/CW
• Output power: 200 W Max AM/FM
• Mode: AM-FM-SSB-CW
• Fuse: 2 X 12 A
• Output power level: 6
• Size: 170x210x62 mm
• Pre-amp: 26 dB on reception
• Electronic Switch
• Inversion Polarity protection