Amad led Sunderland's comeback with a stunning goal to impress Erik ten Hag and fire the Wearside closer to the Premier League.
The on-loan Manchester United winger curled home a brilliant 30-yard shot to level the game before Tony Mowbray's men sealed a win through Trai Hume's header. With summer target Jobe Bellingham in the stands ahead of a possible transfer to Wearside from Birmingham inflicted Luton's first defeat in 14 games.
And they extended their own unbeaten run to ten games, ahead of Tuesday's second leg at Kenilworth Road. Amad's best chance of playing for Sunderland next season - an option he is open to - is to fire them to the top flight, a job he has taken on with relish.