Unknown 64 Pro is a synthesizer designed to capture the iconic sounds of the classic Commodore 64. It features a single oscillator with four waveform options including triangle, pulse, saw, and noise, allowing users to recreate vintage digital tones with ease. The synth offers a filter envelope equipped with three filter types: lowpass, bandpass, and hipass, providing flexible shaping of the sound's character.

The instrument includes comprehensive envelope controls for pitch, pulse width, and volume, each offering 13 different curve shapes and the ability to invert the envelope for added sound design possibilities. Users can enhance their patches with ring modulation, which can be driven by either a dedicated oscillator or a BPM-synced LFO. Additional BPM LFOs control pulse width, filter cutoff, and oscillator pitch, offering rhythmic modulation options that sync perfectly with your project tempo.

Unknown 64 Pro stands out with three large sequencers designed to emulate authentic Commodore 64 arpeggios and percussion patterns. These sequencers handle notes, octaves, and waveforms independently and can sync to BPM with speeds ranging from 1/16 to 1/128 notes. Features such as vibrato, bitcrusher effects, MIDI learn, panning, and envelope restart add further depth to sound creation. With 128 presets included, this synth provides instant access to classic C64 sounds while allowing extensive customization.