The F3 series of subwoofers is led by the F3-12 model, an advanced achievement of Fyne Audio. It uses a 300-millimeter long-stroke woofer, a DDX digital amplifier with a power of more than half a kilowatt, and a digital DSP processor that perfectly accounts for the coupling of speaker and amplifier parameters, which implements Bass Boost protection, filtering, and boost circuits for a greater depth of effects in a home theater.