My preamp tube: https://www.amazon.com/dp/B01E8RNUZM?ref=ppx_pop_mob_ap_share
And my power tube: https://www.thetubestore.com/winged-c-6h13c-6as7g
I use these tubes. They’re 100% amazing after about 80hrs of burn in (got rid of all the buzzing). Everything sound so creamy and smooth with this combo.