1. Introduction
Welcome to your new SOUIDMY SEP-8801 Digital Piano. This manual provides essential information for setting up, operating, and maintaining your instrument. The SEP-8801 is designed to offer a rich musical experience with its 88 semi-weighted keys and advanced sound engine.
The SEP-8801 features a Deam Sam5504 Sound Engine, utilizing samples from a prized concert piano, and 24-bit DSP for realistic sound reproduction. It includes 88 demo songs, 100 rhythms, and 128 tones, providing multiple choices for musical expression.

Image Description: A full view of the SOUIDMY SEP-8801 digital piano with its music stand, showcasing its sleek black design and 88 keys.
2. Package Contents
Please ensure all items listed below are present in your package:
- SOUIDMY SEP-8801 88-Key Digital Piano (Black)
- Portable Piano Bag (Black)
- Music Stand Sheet (Black)
- Sustain Pedal
- AC Power Adapter
- USB MIDI Connector
3. Setup
3.1 Unpacking
Carefully remove all components from the packaging. It is recommended to retain the original packaging for future transport or storage of the instrument.
3.2 Power Connection
Connect the AC power adapter to the DC IN port located on the rear panel of the piano. Then, plug the adapter into a standard electrical outlet.
3.3 Music Stand Installation
Insert the included music stand into the designated slots on the top panel of the piano, ensuring it is securely seated.
3.4 Sustain Pedal Connection
Connect the sustain pedal cable to the 'PEDAL' input jack on the rear panel of the piano.
3.5 Headphone Connection
For private practice, connect your headphones to either of the two 6.35mm headphone output jacks located on the front panel. Using headphones will mute the internal speakers.

Image Description: A close-up view of the SOUIDMY SEP-8801 digital piano's right-side control panel, highlighting the volume knob, USB port, and two headphone jacks for connectivity.
4. Operating Instructions
4.1 Power On/Off
Press the POWER button located on the front panel to turn the digital piano on or off.
4.2 Volume Adjustment
Use the PIANO VOLUME knob on the front panel to adjust the overall sound level of the instrument.
4.3 Tone Selection
Press the TONE button. Use the +/- buttons to cycle through the 128 available instrument tones. The selected tone will be displayed on the LCD screen.
4.4 Rhythm Selection
Press the RHYTHM button. Use the +/- buttons to select from the 100 built-in rhythms. Press START/STOP to begin or end the rhythm playback.
4.5 Demo Songs
Press the DEMO button to play through the 88 built-in demo songs. Use the +/- buttons to navigate between songs.
4.6 Metronome
Press the METRONOME button to activate the metronome. The tempo can be adjusted using the SPEED function, typically accessed via a dedicated button or a combination of buttons.
4.7 Recording Function
To record your performance, press the RECORD button. Play your desired piece. Press RECORD again to stop the recording. To listen to your recorded performance, press the PLAY button.
4.8 Dual-Tone Mode
This function allows two different instrument tones to be layered and played simultaneously. Refer to the on-screen display and control panel for specific instructions on activating and selecting the desired tones for layering.
4.9 Dual-Keyboard Mode (Split)
This function divides the 88-key keyboard into two independent sections, allowing two players to play simultaneously or for different instrument sounds to be assigned to each section. Consult the LCD and control panel for activation and adjustment of the split point.
4.10 Semi-Weighted Keys
The 88 semi-weighted keys are designed to emulate the feel and response of an acoustic piano, providing dynamic touch sensitivity based on your playing intensity.

Image Description: A close-up of the SOUIDMY SEP-8801's semi-weighted keys, illustrating the key action and feel designed to mimic an acoustic piano.

Image Description: A detailed view of the SOUIDMY SEP-8801 digital piano's left-side control panel, featuring an LCD screen, level change buttons, and function switches for various settings like Tone, Rhythm, and Demo.
5. Maintenance
5.1 Cleaning
Wipe the piano's surface with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents, as these can damage the finish. For stubborn dirt, a slightly damp cloth followed by a dry cloth may be used.
5.2 Storage
When not in use, store the piano in a dry, dust-free environment away from direct sunlight and extreme temperatures. Use the included portable piano bag for protection during transport or extended storage.

Image Description: A person carrying the SOUIDMY SEP-8801 digital piano in its black portable carrying bag, demonstrating its ease of transport.
6. Troubleshooting
6.1 No Sound
- Ensure the power adapter is securely connected and the piano is turned on.
- Check the PIANO VOLUME knob and increase the level.
- If headphones are connected, disconnect them to check speaker output.
- Ensure all audio cables (if external speakers are used) are securely connected and undamaged.
6.2 Keys Not Responding
- Power cycle the instrument (turn off, then on again).
- Ensure no foreign objects are lodged between the keys.
6.3 Distorted Sound
- Reduce the PIANO VOLUME level.
- Check for loose connections to external speakers or amplifiers.
6.4 Sustain Pedal Not Working
- Ensure the pedal cable is fully inserted into the 'PEDAL' input jack.
- Power cycle the piano with the pedal connected.
7. Specifications
| Feature | Detail |
|---|---|
| Model | SEP 8801 |
| Keys | 88 Semi-Weighted Keys |
| Sound Engine | Deam Sam5504 |
| Polyphony | 128-note maximum |
| Tones | 128 |
| Rhythms | 100 |
| Demo Songs | 88 |
| Speakers | 20W 8Ω professional speaker |
| Headphone Jacks | 2 x 6.35mm |
| Connectivity | USB MIDI, Sustain Pedal Input, Auxiliary |
| Power Source | AC Adapter |
| Dimensions (L x W x H) | 147.32 x 37.34 x 17.78 cm (approx. 52 x 11 x 2.8 inches) |
| Weight | 10.89 kg |
| UPC | 752777996634 |
Note: Specifications are subject to change without notice.
8. Warranty and Support
For warranty information or technical support regarding your SOUIDMY SEP-8801 Digital Piano, please contact SOUIDMY customer service. Refer to the product packaging or the official SOUIDMY website for the most current contact details.
When contacting support, please have your model number (SEP 8801) and purchase date available to expedite assistance.