The F4IN accessory is an analog input extension board, compatible with the new line of Audison AF bit amplifiers with integrated Dsp. The card fits the dedicated external slot of the AF bit amplifier and adds four analog high-voltage input channels to the AF bit native eight, thus reaching a total of twelve high-level (SPK IN) inputs. With respect to the sensitivity range of the AF bit native eight SPK IN inputs (2.2 ÷ 22 VRMS), the F4IN features 3.2 ÷ 32 VRMS to allow a perfect integration in advanced OEM systems with higher voltages. Features F4IN features 3.2 ÷ 32 VRMS to allow perfect integration in advanced OEM systems with higher voltages. F4IN can be the perfect solution for installations in OEM systems like: Audi A5/S5 2015 with B&O for Subwoofer Audi Q5 with B&O for Subwoofer Audi A6 4G with Bose for Subwoofer Most BMWs with a H/K system for Subwoofer Porsche Cayenne 2018 with Bose for Subwoofer Skoda Octavia 2022 with Canton for Subwoofer Volvo FH12 with OEM Subwoofer DVC 8+8 Ohm
