Check the listing for details. ANC-Mini. Condition: New. Listed at 69.99 USD. The ANC-MiniThe ANC-Mini is an Adjustable Noise Control device that can be used with any Spirit/Ghost Boxes that offer a separate Audio Output. The ANC-Mini will reduce unwanted noise which makes it easier to hear and decipher EVPs that come through. The ANC-Mini works with SB7, SB7T, SB11, S-Box and Para4ce Ghost BoxHow Does it Work?The ANC-Mini controls the white noise and sweeping sounds of your Spirit or Ghost Box using a unique software algorithm to enable a clearer EVP response. Includes Velcro to attach the ANC-Mini to the back of your Ghost Box or Spirit Box. How to UseThe ANC-Mini is very easy to use. It has only two buttons to adjust the Noise Control and take your EVP session to a new level. Adjust the Volume of your Spirit or Ghost Box and Connect the Audio Output to the Audio Input of the ANC-Mini. Press the RED Button until the noise level is lowered to your preference. Press the YELLOW Button to bring the noise level up. The ANC-Mini is reset by Pressing both the RED & YELLOW Buttons for approximately two seconds.Features:Small size and light weightEasy to use! Only 2 control buttons.Velcro attachment for Spirit/Ghost Box (1)AA Alkaline Batteries (2)4” Male Audio Cables to connect Spirit/Ghost Box (2)