Own one of the BEST monoblock amplifier you can get your hands on. 

This amplifier is a LEGEND! Drives any speaker with easy. With a mix of Valve/Transistor it also has an amazing smooth sound!

The Black Widow mono amplifier is a standard stereo unit converted to balanced bridge operation with the addition of a valve based differential input stage. This enables a delivery of 800w into 8 ohm. Provision is made for both single ended and balanced inputs.