I found a pair of Koss Pro75 over ear Headphones at the local thrift shop today, picked them up for a buck and a half.  I cannot seem to find any information on these anywhere, they have an odd shape with rubber pads and no openings in the back at all.  They seem like they may be an off shoot of...

Hello all,     I purchased a set of Numark ES-701 headphones with a broken plug.  The cables have only 2 conductors per side making them electrets, the 6 pin plug is just for show and to ensure polarity.  My issue is I do not have the converter box to find out the rating on the transformers...

Hello all,     I recently picked up a pair of Sony on ear DR-15 headphones, they have "Sony, stereo headphone, DR-15, Made in Japan" on the outside of each ear piece.  The only information that I have been able to find is that they may have been made in 1971.  I am curious about the...

      I have been slowly putting together a home listening system.  Started with the Fostex T50RP's, picked up a Technics SA-303 tuner at the flea market and a cheap turntable from Wal-mart.  Yesterday I stumbled across a Nakamichi CD 3 Music bank.  I am happy with the sound of this frankenstein...