Up for sale is an Oberheim Xpander, one of the most powerful and sought-after analog synths ever built. It's a six-voice, fully analog design with a deep modulation matrix and 15 switchable filter modes, from classic low-pass sweeps to phasers and notch/band combinations. It handles everything from huge pads and brass to aggressive basses and evolving textures. If you’re looking at this, you know what you’re looking for.