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In building Synchros S400BT, JBL used a a very nice combination of metal, plastic, and what seems to be faux leather for both the the earcups and padding inside the adjustable stainless steel headband. Each side of the band can slide to adjust to 14 different levels of fit. While they click into place each step of the way, there’s no real resistance, and the earcups don’t ever really feel tight as a result. For travel, the cups fold in…
