Just like it says, I have a pair from a family friend, and I've always been curious as to what the original specs on these were. They're really old, although HOW old, I don't know. The model number is SS-U515. Searching on google doesn't do much, so I thought I'd ask here. Feel free to PM me or email me about any info you might have/know/find. Thanks in advance. Time to get coding.