The Roland VK-77 Combo Organ is a dual-manual instrument with two 61-key keyboards designed for genuine vintage organ performance. With independent harmonic drawbars for manuals, pedals, and orchestral voices, it painstakingly replicates vintage tonewheel sounds using Roland’s “Virtual ToneWheel” modeling technology. For rock and jazz organists, it is a complete and expressive option because of its advanced COSM-modeled rotary speaker simulation, key click, leakage, and percussion effects.