A veteran of games in the KHL and SHL, Jamtin was brought in to bring some energy to the ranks after a mixed start to the domestic season.
Steelers, hoping to secure a place in the quarter final of a competition in which they were beaten finalists in last year, withstood some pressure but carved out a 12th minute lead from Matt Marquardt, his fifth point in four games.
Panthers, who became the first British club to qualify for the knockout stage of the Champions Hockey League thanks to a 2-0 win over Finnish side TPS Turku on Tuesday, were behind by the same score five minutes later.
Robert Dowd, playing his 500th games in all EIHL competitions, celebrated that fact by scoring from a Levi Nelson set-up.
So despite outshooting Sheffield 23-9, Nottingham ended the first session 0-2 down.
That was a real confidence booster for a team shorn of injured Mathieu Roy and Davey Phillips.
A painful-to-watch bout between Zack Fitzgerald and Mathieu Gagnon had the crowd on its feet.
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