The Therevox ET-4 (Ondes Martenot Style Analog Synthesizer)
Here’s a quick demo of the Therevox ET-4 analog ribbon synthesizer. Inspired by the Ondes Martenot’s au ruban controller, the ET-4 is controlled by moving a finger along a reference keyboard shaped to provide tactile feedback. Dual pressure sensitive intensity keys control the amplitude of the ET-4’s two independent analog oscillators.