I saw one site that sells a small 75ohm adaptor to make the Ety 4P into (close to a) 4S without the $45-60 cable. Cost was about $25 I think. http://www.fixup.net/tips/ety/ety.htm "Mini 75 ohm adapter black (make some headphones sound better; when used with ER-4P, make it equal to ER-4S) $24.99" http://www.fixup.net/products/index.htm Any thoughts? I know the guy who makes these posts here some. Anyone else use these?