Visionary Hifonics Founder Passes Away News was announced this week, that Helmut Richard Leo Stieglitz, founder of the iconic Hifonics car audio brand passed away at his home near Seattle …
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Hifonics at Highlifter’s 2018 Mud Nationals
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HIFONICS & PETRA SHOW BIG SUCCESS
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Visionary Hifonics Founder, Helmut Stieglitz Passes Away
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Hifonics Recap of Highlifter’s Mud Nationals 2017