I took the linear Sennheiser upgrade path : r/headphones
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Amazon.com: Sennheiser HD 800 S Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers With Open-Back Earcups, Includes Balanced Cable, 2-Year Warranty (Black) : Electronics
Sennheiser HD 700 vs Sennheiser HD 800 S: What is the difference?
Sennheiser HD700 Anaxilus Mod – Fix Your Treble Woes with this Simple Mod – Everyday Listening
Amazon.com: Sennheiser HD 800 S Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers With Open-Back Earcups, Includes Balanced Cable, 2-Year Warranty (Black) : Electronics
Sennheiser HD 700 vs HD 800 - Ears On Sound Comparison | Trusted Reviews
Sennheiser HD 700 Headphone - Reviews | Headphone Reviews and Discussion - Head-Fi.org
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Silver Dragon Premium Cable for Sennheiser Headphones
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