Are the Hfi-550 and hfi-650 equally hard to drive from a portable? i mean will they sound eqally loud at the same volume from my portable?
Tanku..
Tanku..
Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › How sensitivity are the Ultrasone hfi 550 and 650?
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How sensitivity are the Ultrasone hfi 550 and 650?
post #2 of 2
12/9/04 at 1:45pm
Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › How sensitivity are the Ultrasone hfi 550 and 650?
