The great Sennheiser headphone trade-in program is back. If you missed the last trade-in opportunity then here’s another chance to receive up to $50 for trading in your old wired OR wireless headsets toward a new pair of Sennheiser headphones (eBay purchases do not qualify). Rebates range from $5 for their street buds (MX and OMX series) to $50 for their audiophile HD 600 and HD 650. The trade-in program is happening now until September 30, 2008. Check the models that qualify as well as terms and conditions via the link below.

Link: Sennheiser trade in and trade up (PDF file)

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