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New Nylon Audio Cable For Sennheise HD438 HD439 HD451 HD461G/i HD471i Headphones
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3.5mm To 2.5mm Headset Upgrade Audio Nylon Cable Part For Sennheiser HD438 HD439 | eBay
ATTENTION ALL SENNHEISER HD 438 owners or Potential buyers - A simple mod that actually improves the sound | Page 2 | Headphone Reviews and Discussion - Head-Fi.org