YUER XS-02 LOOPER

Precautions 01

Please read the instructions carefully before using this product.

Power Supply

Please use a DC9V, 300 mA power supply. Using an improper power supply may cause short circuit and damage the equipment. Please disconnect the power supply when not in use for a long time.

Safety precautions

1. Please read the instructions carefully.
2. Heed all warnings.
3. The device can only be used with a power supply providing the specified voltage and current range.
4. Please keep the equipment away from water sources or places with high humidity.
5. Please only use a clean and dry cloth for cleaning the product.
6. To avoid interference, please keep the device away from radio, TV or other devices with magnetic fields when in use.
7. Do not hit or throw the product or subject it to vibrations.
8. Do not allow paper scraps, metal objects, or other objects to fall into the device.
9. Do not drop the device or subject it to shock and excessive pressure.
10. Do not disassemble the equipment for removing internal parts or making any modifications.

Features 02

1. 44.1 kHz, 16 bit high-quality Looper.
2. 40 Looper storage positions, 4 minutes per position, 160 minutes total recording time.
3. Full-color light bar for real-time indication of Looper status and progress.
4. Built-in 1/8" stereo headphone output jack.
5. "Once" function for stopping immediately after a single playback.
6. "Fade Out" function allows the Looper track to fade out naturally to complete silence.
7. Dual footswitches control different functions of the Looper.
8. USB port for connecting to a computer for importing / exporting / deleting audio data.

Start 03

A YUER XS-02 Looper pedal, a compact blue effects pedal with two footswitches, three knobs, a display screen, and various input/output jacks.

Connections:

• Connect the 9V power supply (negative centre) to the power jack.
• Connect the guitar to the input jack (INPUT-L) with an instrument cable.
• Connect stereo inputs to both the left and right jacks.
• Connect the output jacks of the unit to amplifiers or other effects devices.

Diagram Description: The diagram illustrates the YUER XS-02 Looper connected to a DC power adapter, a guitar via an instrument cable to the INPUT-L jack, and output jacks connected to two speakers.

Layout 04-05

The YUER XS-02 Looper features several controls and connections:

1. Left footswitch: Controls recording, overdubbing, and playback of the LOOPER.
2. SELECT push-button knob: Used to set the recording position, fade time, and "Once" function. A long press saves the current settings.
3. Display screen: Shows current status information.
4. VOLUME push-button knob: Adjusts the output volume. Pressing and holding clears the current setting or track.
5. Full color light bar: Indicates the LOOPER's operating status and track length.
6. Right footswitch: Controls LOOPER playback, stopping, and removing data.
7. INPUT-L: 1/4" Mono audio input jack. (Connect both LEFT and RIGHT inputs for stereo input).
8. INPUT-R: 1/4" Mono audio input jack.
9. OUTPUT-L: 1/4" Mono output jack. (Connect both output jacks for stereo output).
10. OUTPUT-R: 1/4" Mono output jack.
11. USB: Type-C USB interface for connecting to a PC for data import, export, and removal.
12. Headphone: 1/8" stereo headphone output jack.
13. DCIN: Power jack for 9V / 300 mA (negative centre).

Instructions 06-10

Looper Setting

Select the parameter to be set by pressing the SELECT knob.

• Memory: The Looper provides 40 storage positions (1-40). "Stored" indicates an occupied position, while "Empty" indicates an available position for storing. Turn the LOOPER knob to browse positions and use the SELECT knob to select the desired position.
• Fade out: Press the Select knob to select the "Fade out" item. Turn the knob to set the fade-out effect duration when playback is stopped. The adjustment range is 1-5 seconds; the default is Off.
• Once: Switches the "Once" single playback function on or off. Press the Select knob to select the "Once" item, and turn the knob to select "On" or "Off".

Rec and Dub Mode

Press the Select knob to select "Memory". Then turn the knob to select an empty position.

Pressing the left footswitch starts recording, indicated by a red progress light on the light bar.

After recording, press the right footswitch. The light bar turns blue, and the progress bar indicates that recording mode is off and playback has begun.

To record another track over the original (dubbing), press the left footswitch after finishing the first recording. Press either the left or right footswitch to stop recording mode and return to playback.

Note: Recording mode automatically stops and playback begins when the first track reaches 4 minutes.

Undo/Redo

When two or more tracks are recorded and the Looper is playing back, holding the right footswitch for one second initiates the "Undo" function. The last track is removed, and the LED bar flashes yellow briefly. Holding the right footswitch again for one second restores the removed track, with the LED bar flashing yellow again.

Stop

In playback mode, pressing the right footswitch executes the Stop function. The track stops playing, and the light bar flashes white.

If the "Once" function is active, pressing the right footswitch once executes the "Once" function, indicated by the "Once" option flashing on the screen, causing the Looper track to stop automatically at the end. Pressing the right footswitch twice in playback mode stops playback immediately.

If the "Fade out" function is active, pressing the right footswitch in playback mode executes the "Fade Out" function, indicated by the "Fade Out" option flashing on the screen. The Looper track's playback volume will naturally decay to silence and then stop. Pressing the right footswitch twice in playback mode stops playback immediately.

When "Once" and "Fade Out" functions are activated simultaneously, pressing the right footswitch once in playback mode executes both functions. The outcome depends on the track length and the timing of the footswitch press, with the "Once" function taking priority for determining the end of playback.

Clear

To clear a track, double-press the right footswitch in playback mode and hold for one second, or long-press the right footswitch in Stop mode for one second. The light bar flashes red rapidly and then turns off upon completion.

This function applies only to temporary Looper tracks that have not been saved. Saved tracks cannot be cleared using this method.

Looper Data Storage

To save Looper tracks, open the Save screen by pressing the Select knob for one second.

After recording tracks, rotate the knob to select YES/NO and press again to execute the save operation. Saving is completed when the progress bar finishes, and the Memory name changes from "Empty" to "Stored".

Note: If no new track is recorded in DUB mode after saving, the Undo/Redo function will be unavailable.

Clear Looper Data

Open the Save screen by pressing the VOLUME knob for one second.

Select the Looper position containing saved data. Press and hold the Volume knob for one second until a prompt appears. Rotate the knob to select YES/NO and press again to confirm deletion. Upon completion of the progress bar, the data is deleted, and the Memory name reverts to "Empty".

Prompt Description: A prompt appears asking "Are you sure? Deleted content will not be visible and cannot be retrieved!" with YES/NO options. ❓ [Are you sure? Prompt]

Looper Playback Volume Control

Turn the Volume knob to adjust the Looper playback volume. The screen temporarily displays the volume parameter during adjustment. The adjustment range is -∞ to 6 dB. The factory default is 0 dB.

Display Description: The screen shows "Output Volume" with a slider and the current level, e.g., "0.0dB".

PC-based Data Management 11-12

Connect the XS-02 to a computer using a USB cable via the USB port. The Looper will stop playback and become inoperable during connection. The screen will display 'USB Connected' upon successful connection.

Icon Description: A USB connector icon is displayed. ? [USB Connect Icon]

On your computer, navigate to "My Computer" (Windows) or "Finder" (macOS), locate the drive named 'XS-02', and open it.

Inside the 'XS-02' drive, find the 'WAVE' folder. This folder contains subfolders (WO1 to WO40) that correspond to the 40 Looper storage locations on the XS-02 device.

Folder Structure Description: The 'WAVE' folder contains numbered subfolders (e.g., WO1, WO2, WO3, WO4, WO5) representing storage slots. One subfolder, 'WO1', is shown containing an audio file named 'RECO1.WAV'.

Data Export

In the 'WAVE' folder, open the subfolder containing the desired audio data. Drag and drop or copy the audio files to other folders on your computer to complete the data export.

Data Import

Open the subfolder within 'WAVE' that corresponds to the desired Looper location. If a subfolder is empty, it means there is no track data in that Looper location.

Data import is performed by copying an audio file (only 44.1 kHz / 16 Bit WAV stereo audio files are supported) into an empty subfolder. The audio file name must be changed to "RECXX", where "XX" represents the storage number (e.g., rename to REC01 for import to W01).

After disconnecting the USB connection, the screen returns to normal. Switching to the Looper location where data was imported will display the imported data.

Notes:

1. If an imported audio file is longer than 4 minutes, only the first 4 minutes will be captured and looped. The remaining part of the file will be deleted.
2. Files not meeting the format requirements (44.1 kHz / 16 bit WAV stereo audio file) or not correctly named (RECXX) will not be recognized for import.

Delete Data

Navigate to the 'WAVE' folder and open the subfolder containing existing audio data. Delete the audio files within that subfolder. After disconnecting the USB connection and switching to the memory location on the Looper, it will display "Empty".

Specifications 13-14