Replace 6SN7 to E88CC on HP amp 90VDC plate capable?

[ballpencil]

yes that's one example. Here's a fancy barebone: New Lite MV04 Remote Preamp Board Volume Control Input Selector | eBay

 

[supernut]

yes that's one example. Here's a fancy barebone: New Lite MV04 Remote Preamp Board Volume Control Input Selector | eBay

Thank you so much but I don't need selector. Remote is great I am very need it.