RIKIO ROCKS / Monday, August 11, 2025 / Categories: New Products, EDM News Eternal Engine Apparatus Tube Synthesizer Hands-On Demo The Apparatus Tube Synthesizer is the first duophonic synthesizer based on vacuum and gas-filled radio tubes.… Read More Eternal Engine Apparatus Tube Synthesizer Hands-On Demo Previous Article Erica Synths Bringing Back Rare Elektor Formant Modular Synthesizer (Sneak Preview) Next Article Radiant Eurorack Multi-Effects Processor Firmware 2.0 Adds Three New Effects Print 12 Tags: SynthRadio