Description: 【Noise Reduction】: Effectively suppresses unwanted background noise in audio signals with integrated digital noise reduction (NR) and low pass filter (LPF) technology, ensuring clearer communication 【DSP Enhancement】: Designed for devices without built in DSP, such as shortwave radios, this unit upgrades your audio experience during QSO sessions by improving signal and reducing interference 【Premium Material】: Constructed from aluminum alloy for enhanced longevity and reliable performance in various environments 【Compact Design】: Features a space saving size of 5.12inchx3.50inchx1.54inch, making it easy to integrate into your existing setup without taking up much room 【Complete Accessories】: Includes the main unit, a 3.5mm audio cable, a Type C data cable, and an English user manual for quick installation and convenient use Size Chart: 13cmx8.9cmx3.9cm/5.12inchx3.50inchx1.54inch Package Includes: 1 main unit,  1 3.5mm audio cable,  1 Type C data cable, 1 English user manual Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.