If I connect my amp to a slave out and send that into an audio interface, would that sound alright for recording instead of micing a cab?

It's a laney gh100ti if it matters
It will work, and yes you need to use a cab sim.

Remember to keep the amp in standby (or connect a cab to it is the line out doesn't work when the amp's in standby) while using it.
Name's Luca.

Quote by OliOsbourne
I don't know anything about this topic, but I just clicked on this thread because of your username :O
Quote by Cajundaddy
Clue: amplifiers amplify so don't turn it on if you need quiet.
Quote by chrismendiola
I guess spambots are now capable of reading minds.