You really have no idea do you sunshine.
There is 6v from the phono stage at 50ohms output impedance. The power amp only needs 1v for full output, try to wrap you head around it if you can!
I only recommend and link to other passives (not mine) when the impedance matches are fine, and there’s absolutely no extra gain needed from an expensive active preamp. Go learn some, and try to understand little more.