FEARkILLER X2 is a virtual analogue synthesizer that combines classic synthesis with frequency modulation and oscillator hard sync capabilities. It features an FM oscillator offering two waveforms along with a unique 'Metal' setting to create distinctive tonal textures. The sub oscillator is tightly integrated, syncing hard to the main oscillator to deliver rich and complex sounds.

This synth is designed to be efficient on CPU usage while providing a powerful sound engine. It includes a state-variable Vektor filter with selectable slopes of 12 or 24 dB per octave, allowing flexible tonal shaping. The modulation system is robust, featuring a six-stage envelope and two tempo-synced LFOs with seven waveform options each, which enable dynamic and evolving soundscapes.

Additional sound design tools include distortion and a 32-step gate effect to add character and rhythmic complexity. A seven-row modulation matrix supports extensive routing between 13 modulation sources and destinations, giving users precise control over their sound's movement and expression. FEARkILLER X2 offers a powerful synthesis platform for crafting modern and edgy sounds efficiently.