The Moog Rogue is a compact, basic, but useful and enjoyable little analogue mono synth from the early 1980s. It has two oscillators, one LFO, white noise, one very simple AD/AR envelope and VCA, and a characterful filter. The controls are fairly minimal, but well-selected enough not to compromise the sound, which is on the brazen side and quite satisfying. The Rogue is made cheaply, but is fun and playable and covers a surprising amount of synthy ground. It also comes with an audio input (pre-filter), and Keyboard CV/Gate in/out jacks as standard.
It does not, however, come with a very good power supply, sporting an unhappy mini jack on the rear panel which takes 24V AC from the supplied transformer line wart. Nor does it come with a filter CV input jack. A worse problem is the tendency of the dust-protector that fits around the sliders to turn to invasive and problematic gloop over the years. Details of these issues, and solutions to them, are given in the following linked blog entries: