The P-SB11-ANC, which was released in January 2021, has a Dual Channel Adjustable Noise Control filter that allows you to receive Spirit Responses while removing the sweep sound during Spirit Box Sessions. When we ship a P-SB11-ANC, it has been thoroughly tested and the ANC has been set to the best possible level. If you want to change anything, simply use the two buttons for more or less noise to raise or decrease the filter. Hearing and understanding Spirit Responses is much easier with the ANC. All of our normal P-features SB11’s and specifications remain the same.
Adjustable Sweep Rates, Forward / Reverse Sweep, Dual Audio Outputs, Selectable AM/FM Antenna Attenuation, Built-in high-intensity Red LED Flashlight, Audio Mute while Sweeping, Adjustable volume, Visual & Audible Hot & Cold Spot Detection with selectable Sound are all features of the P-SB11.