SA-S1 is a synth sampler plug-in built from the Behringer UB-Xa, a faithful recreation of the legendary Oberheim OB-Xa — the iconic 8-voice analog synth heard on timeless records by Prince, Van Halen, Queen, and Rush. We captured the full character of this classic instrument and mapped it into a lightweight, modern plug-in designed to get you from idea to track faster than ever. SA-S1 runs inside your DAW, works seamlessly with any MIDI controller, and delivers authentic analog tone with effortless control. Core Features Real analog samples from the UB-Xa 8 Bass 14 Leads 5 FX 9 Pads 25 Plucks 16-voice polyphony baked into every patch Pads, leads, and bass with real analog weight and warmth Full ADSR envelope control for precise shaping 4 built-in effects: saturation, phaser, delay, and reverb Zero menu diving — just load, play, and create Instant MIDI compatibility Compatible with macOS (.dmg) + Windows (.exe) If you crave lush pads, searing leads, and bass that could crack drywall — welcome home. Made with love by Stairway Audio.