| Brand | Unbranded |
|---|---|
| Marke | Markenlos |
Check the listing for details. 2pcs CXA1332 Dolby Noise Cancellation Module Playback Noise Reduction Class B/C. Condition: New. Listed at 14.32 USD. Dolby b and c are tape noise reduction systems used to reduce the "hiss" generated by tape recordings and to extend the dynamic range. The difference is that class B noise reduction systems can reduce noise by 10 dB, while class C noise reduction is 20 dB.