Broadcast your signal over faulty airways to that vintage analog television, with handy (modulatable) control over reception quality.
Two inputs allow for stereo (or dual mono) input of audio or cv. If either input is left unconnected, its corresponding output doubles the input for a nice stereo effect. Decrease the reception (counterclockwise) to taste, force it into some amp saturation, and then adjust the wet/dry mix for balance. The smaller doubling control introduces slapback delay to great effect.
This device will make it sound like your synth came from oldest era of electronic experimentation, but can also be dialed down to achieve subtle thickening or analogish noise.