Tube Amp under $3000 for top end?

I am considering a tube amp for the top end and was looking at the Space-Tech-Lab amps for starters. The company offers many amp/tube options and I was looking at a 40-50 wpc class A output to match my SS Kinergetics KBA-75 class A amp that is around 130 wpc.

Your thoughts and recommendations are appreciated.

Happy Listening.