OP, I worked with Kevin and Jarrod at Upscale Audio on Matching tubes with my PRimaLuna HP Integrated (Kevin is part owner of PL)
Through talking to them and reading the Upscale Audio website and watching Kevin’s short videos on many types of tubes , not only KT120s, KT150s, etc, but specifically tubes for ARC amps.
Kevin has a video specifically for tubes for ARC owners. I don’t recall much of it because I don’t have arc gear, but he talked a lot about current, electricity matching with the electronics to not only get good sound but good tube longevity in ARC gear
upscaleaudio.com
-no affiliation-
Through talking to them and reading the Upscale Audio website and watching Kevin’s short videos on many types of tubes , not only KT120s, KT150s, etc, but specifically tubes for ARC amps.
Kevin has a video specifically for tubes for ARC owners. I don’t recall much of it because I don’t have arc gear, but he talked a lot about current, electricity matching with the electronics to not only get good sound but good tube longevity in ARC gear
upscaleaudio.com
-no affiliation-