What do you think about a "hybrid" spark + ER4 Isolation
Apr 2, 2006 at 9:48 PM Post #2 of 2

azncookiecutter

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I'm pretty sure it's just triflanges slipped over the Plugs' stem. The Plugs do not sound as good as other $30 semi-canals, even if the Plugs would have more isolation.
 

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