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Sennheiser HD Updated Drivers - Headfonia Reviews
Sennheiser HD 650 review
The royal pain in the rear. Dented HD650 diaphragm centrally and peripherally. What can I do? Moderate "dulling" and weakening of the left channel. More details in the comments. : r/headphones
COMPARISON / REVIEW (Part Deux) : A tale of two Sennheisers – HD600 vs HD650 | Page 7 | Headphone Reviews and Discussion - Head-Fi.org
Sennheiser HD600 HD650 HD660S Analysis | Page 5 | Super Best Audio Friends