Six String Stinger on 18V

[Paddyosonic]

Could I run the Six String Stinger at 18V? I was thinking of using it as a preamp in a small combo. I was going to use a pre-built mono TPA3110 class D board as the power amp and then into a Riftone 8" speaker. Would I need to do something to re-bias the FETs?

 

[Cybercow]

With a glance at the schematic, doubtful running it at 18v would hurt it. And the biasing should still be fine as is. So it can't hurt to try. Giver a go and see if sounds the same as at 9v.