1. Úvod
Welcome to the user manual for your ESI Xsynth. This document provides comprehensive instructions for setting up, operating, and maintaining your portable synthesizer. The Xsynth combines a virtual analog synthesizer with a master keyboard, MIDI interface, and audio interface, offering a versatile tool for music production and performance.
Please read this manual thoroughly to ensure proper use and to maximize the potential of your ESI Xsynth.

Figure 1.1: ESI Xsynth Overview. This image displays the top-down view of the ESI Xsynth, highlighting its compact design, the 25 touch-sensitive keys, and the layout of its control knobs and buttons.
2. Klíčové vlastnosti
The ESI Xsynth is equipped with a range of features designed for comprehensive sound creation and control:
- Synthesizer Engine: Virtual analog subtractive synthesis based on sample ROM.
- Polyfonie: Up to 10 voices.
- Zvukový design: Features 3 oscillators, 3 LFOs, 3 AHDSR envelopes, 16 modulation matrix slots, 3 effect sections, and an EQ.
- Paměť oprav: 512 sounds organized into 4 banks of 128 patches each.
- Klávesnice: 25 touch-sensitive keys with full width and compact length, derived from the Xkey series.
- Ovládací prvky výkonu: Polyphonic Aftertouch, Arpeggiator, Glide, Octave Shift, and Hold Functions.
- Expressive Input: Pressure-sensitive modulation and pitchbend buttons.
- Konektivita: USB-C for power, audio, and MIDI; DIN MIDI input and output.
- Audio I/O: Dedicated 3.5 mm jacks for headphones, line-out, and aux-in.
- Audio rozhraní: Integrated 96kHz/24bit 2-in/2-out audio interface.
3. Průvodce nastavením
3.1 Vybalení a počáteční kontrola
Carefully remove the ESI Xsynth from its packaging. Inspect the unit for any signs of damage that may have occurred during transit. Retain the packaging for future transport or storage.
3.2 Powering the Xsynth
The ESI Xsynth is powered via its USB-C port. Connect the provided USB-C cable to the Xsynth's USB-C port and the other end to a compatible USB power adapter (not included) or a computer's USB port. The unit will power on automatically.
3.3 Connecting Audio and MIDI
The Xsynth offers various audio and MIDI connectivity options:
- USB-C: For combined power, audio, and MIDI communication with a computer.
- DIN MIDI In/Out: Pro připojení externích MIDI zařízení použijte standardní 5pinové MIDI kabely.
- Headphones (3.5mm): Připojte stereo sluchátka pro soukromý monitoring.
- Linkový výstup (3.5 mm): Připojte se k amplifier, mixer, or audio interface for stereo output.
- Aux vstup (3.5 mm): Connect external audio sources to be processed or mixed with the Xsynth's output.

Figure 3.1: Rear Panel Connections. This image illustrates the rear panel of the ESI Xsynth, detailing the placement of the USB-C port, 3.5mm audio jacks (Aux In, Line Out, Phones), and the DIN MIDI In/Out ports.
4. Operating the Xsynth
4.1 Základní ovládací prvky a navigace
The Xsynth features a streamlined interface for intuitive control. Key elements include:
- Knoflíky: Control various parameters such as oscillator settings, filter cutoff, and effect levels.
- tlačítka: Used for patch selection, mode switching (e.g., OSC, ENV, LFO, MACRO, MIX, GLOBAL), and activating performance features.
- Zobrazit: A small screen provides visual feedback on current parameters and settings.
- Navigační tlačítka: "PAGE", "ENTER", "GLOBAL", and "SELECT" buttons facilitate menu navigation and parameter adjustment.

Figure 4.1: Front Panel Controls. This image shows a close-up of the ESI Xsynth's keyboard and the main control area, including the display, knobs, and function buttons.
4.2 Synthesizer Parameters
The Xsynth's virtual analog engine allows for extensive sound shaping:
- Oscillators (OSC): Adjust waveform, pitch, and other characteristics of the 3 oscillators.
- Envelopes (ENV): Shape the amplitude, filter, or pitch over time using the 3 AHDSR envelopes.
- LFO: Modulate parameters with the 3 Low-Frequency Oscillators.
- Modulation Matrix: Utilize the 16 mod matrix slots to assign modulation sources to destinations.
- Efekty (FX): Apply built-in effects and adjust their parameters.
- EQ: Fine-tune the tonal balance of your sounds.
4.3 Keyboard and Performance Features
The 25 touch-sensitive keys provide a responsive playing experience. Enhance your performance with:
- Polyphonic Aftertouch: Apply pressure to individual keys after striking them to modulate sound.
- Arpeggiator: Create rhythmic patterns from held notes.
- Klouzat: Smoothly transition between notes.
- Posun oktávy: Transpose the keyboard range up or down.
- Držet: Sustain notes without continuously holding down keys.
- Modulation and Pitchbend Buttons: Pressure-sensitive buttons for expressive control over pitch and other parameters.
5. Údržba
To ensure the longevity and optimal performance of your ESI Xsynth, follow these maintenance guidelines:
- Čištění: Use a soft, dry cloth to wipe down the unit. For stubborn dirt, slightly damphadřík vodou. Nepoužívejte abrazivní čisticí prostředky ani rozpouštědla.
- Skladování: Store the Xsynth in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
- Zacházení: Avoid dropping the unit or subjecting it to strong impacts. Do not place heavy objects on top of the Xsynth.
- Konektivita: Always handle cables by their connectors, not by the cable itself, to prevent damage to the ports and cables.
6. Řešení problémů
If you encounter issues with your ESI Xsynth, refer to the following common problems and solutions:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Žádná síla | USB-C cable not connected properly or power source issue. | Ensure the USB-C cable is securely connected to both the Xsynth and the power source. Try a different USB port or power adapter. |
| Žádný zvukový výstup | Volume too low, incorrect audio output selected, or cable issue. | Check the master volume on the Xsynth. Ensure your headphones or speakers are connected to the correct output (Line Out/Phones) and are powered on. Verify audio settings on your computer if using USB audio. |
| MIDI nefunguje | Incorrect MIDI connections or software settings. | Verify DIN MIDI cables are connected correctly (Out to In, In to Out). Check MIDI settings in your DAW or external MIDI device. Ensure USB MIDI drivers are installed if required (usually class-compliant). |
| Klávesy nereagují | Unit frozen or internal issue. | Try power cycling the unit (unplug and replug USB-C). If the issue persists, contact customer support. |
If the problem persists after attempting these solutions, please contact ESI customer support for further assistance.
7. Technické specifikace
| Funkce | Detail |
|---|---|
| Název modelu | Xsynth |
| Značka | ESI |
| Typ syntetizátoru | Virtual Analog Subtractive Synthesis (sample ROM based) |
| Polyfonie | Up to 10 voices |
| Oscilátory | 3 |
| LFO | 3 |
| Obálky | 3 AHDSR |
| Modulation Matrix Slots | 16 |
| Effect Sections | 3, plus EQ |
| Patch Memory | 512 sounds (4 banks of 128 patches) |
| Klávesnice | 25 touch-sensitive keys (Xkey series derived) |
| Vlastnosti výkonu | Polyphonic Aftertouch, Arpeggiator, Glide, Octave Shift, Hold Functions, Pressure-sensitive Mod/Pitchbend buttons |
| Konektivita | USB-C (power, audio, MIDI), DIN MIDI In/Out |
| Audio I/O | 3.5mm Headphones, 3.5mm Line-Out, 3.5mm Aux-In |
| Audio rozhraní | 96kHz/24bit 2-in/2-out |
| Hmotnost položky | 990 g |
| Rozměry produktu (D x Š x V) | 43 x 17.1 x 3.6 cm |
| Materiál | Dřevo |
| Barva | Vícebarevný |
8. Záruka a podpora
For information regarding warranty coverage, product registration, or technical support, please refer to the official ESI webnebo se obraťte na místního distributora. Uschovejte si doklad o koupi pro případ reklamace.
Online zdroje: Visit the official ESI website for the latest drivers, firmware updates, FAQs, and additional support documentation.
Kontaktujte podporu: If you require further assistance, please reach out to ESI customer service through the contact information provided on their official webmísto.