dpFX kTinos sunn O))) model T preamp

sunn O))) model T preamp made by dpFX Pedals, sounds just like the real deal and essentially is a swiss army knife in terms of connectivity and utility

Check it out (does custom orders, too):

signal chain:
solar 7 string in standard A (26.5 scale)
lifepedal and swollen pickle
kTinos model T preamp
ampeg v4bh poweramp (6L6 100w)
2x orange ppc412 (v30)