MIDI Expression Control vs ECHO

This is the Control Application for MIDI Expression devices. It lets you change settings for the devices. Please note that the iOS version of the Control Application is only compatible with devices running firmware version 2.6 and up.

ECHO-TERZA is an advanced microtonal MIDI controller designed for musicians, composers, and performers exploring alternative tuning systems and intelligent harmonization. With its professional TERZA engine for seconda/terza voices, a powerful microtonal system, and a full suite of routing and performance tools, ECHO-TERZA opens new creative possibilities for modern music production and live performance. Key Features * TERZA Engine – Professional seconda/terza harmonization for any synth. * Auto Chord Detection – Intelligent chord recognition with automatic preset switching. * MINOR HARM System – Three modes: Natural Minor, Harmonic Minor, Hijazskiar scale. * Poly / Mono Modes – Poly: full harmonization · Mono: seconda via separate channel. * Microtonal Engine – Precise pitch bend control with custom scales. * Dual System (BOTH) – Run TERZA + Microtonal simultaneously for advanced harmony. * Transpose System – Real-time transpose with chord detection compensation. * MIDI Learn Pro – Fast & Normal modes with smart routing automation. * Auto Sound Detection – Smart Mono/Poly switching via Portamento CC. * Advanced Presets – TERZA, Scale, and Combi presets with flexible toggles. * Custom Scales – Create and save your own microtonal scales. * Universal Connectivity – Works with all synths · Bluetooth MIDI supported. * Trigger Button Mapping – Flexible trigger button mapping for live setups. * Sound Manager – Full sound management and quick switching. * Auto Sound Recognition – Intelligent sound detection for streamlined workflow. * Multi-Channel Output – Multiple output channels for studio and live rigs. * Smart MIDI Routing – Intelligent routing that simplifies complex setups. * Switch-Toggle Mode – Choose between momentary or toggle trigger behavior. * Note Range Control – Define MIDI note ranges for split keyboards. * Latency Control – Fine-tune timing to fit any setup. * Volume Control – Precise per-channel/trigger volume adjustment. Why Use It ECHO-TERZA is more than just a controller – it’s a harmonization and microtonal system that: * Integrates seamlessly with DAWs, AUM, Audiobus, and hardware synths. * Delivers seconda/terza voices and microtonality without external modules. * Sets up fast with MIDI Learn Pro and stays stable in live performance. Credits Designed & Developed by * Giannis Tsotsis – Developer * Georgios Tsotsis – Designer © 2025 ECHOPAIS MIDI System · All rights reserved.