The behringer ub xa analog polyphonic synth is a true homage to the classic ob xa synthesizer offering an authentic reproduction complete with the original factory patches. With 16 voices and 2 vcos per voice the ub xa delivers rich and dynamic sound that can be customised to your liking. The vintage mode allows you to choose from 8 different synthesizer signatures including the iconic ob xa and ob 8. The selectable dual slope 12 24 db analog low pass filter per voice adds adjustable resonance giving you full control over your sound. It also features a flexible 8 channel modulation matrix dual layer arpeggiators and sequencers and 2 dedicated lfos with 7 waveform shapes for modulation. The 61 semi weighted keys with poly after touch and velocity sensitivity provide a tactile expressive playing experience.