HADES XT builds upon its predecessor by integrating advanced FM synthesis capabilities through its DCO cross-modulation, offering rich and dynamic sound creation. It features three oscillators equipped with waveshaping, synchronization, and cross-modulation options, allowing for a broad range of tonal possibilities. This extended version enhances sound design flexibility by combining traditional subtractive synthesis with frequency modulation techniques.

The synthesizer includes two multi-mode resonant filters operating in parallel, capable of low-pass and high-pass filtering with selectable slopes, enabling precise tonal shaping and sculpting of the sound. Complementing these filters are two LFOs that can be set to run freely or synced to the host BPM, along with two DADSR envelopes for detailed modulation control. A ring modulator adds further complexity and texture to the sound palette.

HADES XT also incorporates built-in chorus and delay effects, enhancing the spatial and temporal dimensions of the sound without requiring external processing. Its comprehensive 14 by 5 modulation matrix provides extensive routing options, making it possible to connect multiple modulation sources to various parameters for intricate and evolving soundscapes. This combination of features makes HADES XT a powerful synthesizer for musicians seeking depth and creativity in their electronic productions.