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View Full Discussion Are these HD650 specs still accurate when considering the HD6XX model?
- Specially designed acoustic silk ensures precision damping over the entire frequency range and helps to reduce THD to an incredible 0.05%
- Improved frequency response is 10 - 39,500 Hz (-10 dB)
- Hand-selected matched driver elements
- High power neodymium magnets deliver maximum efficiency
- Lightweight aluminum voice coils for very fast transient response
This is basically an HD650 with a different color scheme that is sonicly the same and built to the specs you listed. I have both and can confirm they sound the same.