The six-year-old, 16-1 shot held off a late surge from Wells Lyrical (15-2) to win by three quarters of a length.
Som Tala led at a dawdle under jockey Tony Culhane before striding away as the field turned for home.
Friston Forest (14-1) was third and Hendersyde (10-1) fourth.
Trainer Channon did not make the trip to Newcastle, but Culhane said: "It wasn't the plan to make the running, but I found myself at the front and I just thought I'd stay where I was.
"He's a good old horse. He kept finding more and when I let him out I thought it would take a good one to get him."
At the Curragh, John Gosden's 9-2 shot Dar Re Mi just held off Beach Bunny (25-1) in a thrilling finish to the Audi Pretty Polly Stakes.
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