F4IN Mid Range AF M1D is the only

AF M1D is the only one in the AF D family that can be used also in standalone mode

Frequency response (+/- 3dB) : 1

Reduced mounting depth

be it in the glove box or behind your dashboard

F4IN Mid Range AF M1D is the onlyThe 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