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It does not work with typical mini-jack outputs found in most portable players and some home units. It is theoretically possible to connect your HiFiMAN HE-4 directly to the speaker output terminals of your home amplifier. However, the amplifier in use may not offer more than 70 Watts of output power and must be stable into the higher than typical load of the HiFiMAN HE-4 headphone.
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In a next step increase the curvature of the left and right side. Follow this procedure unit the top of the headband comes to rest on your skull. HiFiMAN is a registered Trademark of Head-Direct Corporation.
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