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RA1
Grado labs
> Headphones
> RA1
Description
RA1 is no loger in production.
| Tranducer type | dynamic | |
| Operating principle | open air | |
| Frequency response | 20-20 | |
| SPL 1mV | 100 | |
| Normal impedance | 32ohms | |
| Driver matched db | .1 |