SMB-4000
| Brand | Phonon |
| Function | Headphones (Enclosed Dynamic Stereo Headphone) |
| Country | Japan |
| Form Factor | Headphone - Circumaural |
| Signal Path | Analog Hardware |
| Dimensions | 40 mm Drivers |
| Weight | 245 g |
| Frequency Response | 20 - 22000 Hz |
| Connections |
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| Notes | Black or sliver case cover available. Special "Muting The Noise" edition available |