Save the 9V power output for the Ashdown Power Ant*, which will also have:
Line-level inputs (balanced?) for connecting a pre-amp (or a keytar, or anything else you fancy)
No amp-style EQ or tone shaping; flat response
Adjustable high-pass filter (to DI and speaker outputs), for keeping your bottom clean
Adjustable low-pass filter (to DI, and switchable to speaker output), for taming overdrive fizz into the desk or a full-range speaker
I mean some sort of IR loader would be nice too, but let's not be greedy 😆
Go-faster stripes
* See what I did there? 😁