Panel overview The Europa front panel contains the following sections: The Europa front panel sections. • 1. MIDI Note On LED. • 2. Patch Selector (for browsing, loading and saving patches). • 3. Sound Engines section. • 4. User Wave and Mixer section. • 5. Filter section. • 6. Amplifier section. • 7. Global output controls. • 8. Global performance and “play” controls. • 9. Envelopes section. • 10. LFO section. • 11. Modulation Bus section. • 12. Effects section.