Features: Brand new and high quality The wireless shortwaves radio DSPnoise canceller contains a DSPdigital signal processor, which processes audiosignals to achieve digital noise reduction and filtering. Suitable for radio receivers using machine input audiosignals, with 3.5mm audiointerface input and audiospectrum display. DNRis the noise reduction level, with a total of 10 levels. FLTis a digital filter with a total of 10 levels, including 200hz low-pass, 500hz low-pass, 700hz low-pass, 1khz low-pass, 1.8khz low-pass, 2khz low-pass, 2.4khz low-pass, 3.5khz low-pass, 6khz low-pass, and passthrough. Filters and noise cancellers can be freely combined and used, with simple and clear button settings.Upgrades the power supply to USB type C input, with built-in speakers or external speakers or amplifiers for better results. It is very suitable for old radio stations without noise reduction function. Just output theaudio from your radio station to this machine. Specifications: Material:PCB Package Includes: 1 x Host 1 x 3.5mmAudio 1 x Type-C Data Cable 1 x Machine Corner Pad note: No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!