There is a new tube on the block and already in use in the Allnic 2000T 30th Anniversary and some Prima Luna amplifiers !
https://www.vivatubes.com/copy-of-new-tung-sol-kt150-vacuum-tube/
The KT170 has a plate dissipation of 85 watts! A pair of KT170's can put out 300 watts.
https://www.vivatubes.com/copy-of-new-tung-sol-kt150-vacuum-tube/
The KT170 has a plate dissipation of 85 watts! A pair of KT170's can put out 300 watts.