Pocket sized, AAA battery powered analogue micro synth. Purchased in 2010 at L&M, rarely used and never gigged. Comes with original manual. VCF is based on Korg's MS-10 and MS-20 synthesizers. Plug it in to a proper sound system or speaker - this thing's bass is immense. It seems like a toy but it really is a great musical experiment for an experienced synth user.