User Manual

What TXT sampler does

Play your first sound

1. 1

   Open SAMPLE and choose a pad

   Tap the pad that should receive the sound. The selected pad name appears in the waveform area.

2. 2

   Tap LOAD SAMPLE

   Choose an audio file. It will be loaded into the currently selected pad.

3. 3

   Tap the pad to check the sound

   If the sound plays after loading, the pad is ready.

iPad layout overview

Use a sampler interface that feels like a real machine.

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1. 1
   Project display

   Shows the current project name, help, and settings access. Help lets you choose the online manual or support form.

2. 2
   LCD and waveform area

   Shows waveform, sequence, project information, and mode-specific buttons.

3. 3
   Tone and playback controls

   Use knobs and switches to shape the selected pad.

4. 4
   16 pads

   Select and play samples. The free plan can use the upper 8 pads in Bank A.

5. 5
   Mode buttons

   Switch between SAMPLE, SEQUENCE, and PROJECT.

6. 6
   Transport controls

   Control BPM, TAP, SEQ REC, PLAY/STOP, and METRO.

iPhone dedicated layout

A portrait-first UI optimized for iPhone operation.

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1. 1
   Top mode buttons

   Switch between the three production modes.

2. 2
   Main LCD

   Shows the primary controls for the selected mode.

3. 3
   Pads

   Select and play samples on a 4 x 4 pad grid.

4. 4
   KNOBS tab

   Adjust pitch and filters in SAMPLE mode. In SEQUENCE mode, it controls effects.

5. 5
   PAD OPTIONS tab

   Control roll, loop playback, reverse playback, and related pad behavior.

6. 6
   TRANSPORT tab

   Open playback and stop controls from the bottom of the screen.

iPhone display modes

You can choose the display mode on first launch and change it later in Settings > Display Settings.

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1. 1
   Waveform display

   Check the sample name and waveform, then set the playback range with START and END.

2. 2
   Sample actions

   Use REC, ADSR, SLICE, LOAD SAMPLE, DEL SAMPLE, and RESET.

3. 3
   Pad selection

   Select the pad you want to edit first.

4. 4
   CTRL tab

   Adjust pitch, filter, volume, and playback behavior.

Import an audio file

1. Select the destination pad.
2. Tap LOAD SAMPLE.
3. Choose an audio file and confirm that the waveform appears.

Record with the microphone

1. Select the destination pad and tap REC.
2. If the pad already has a sound, the app asks whether to start recording. The original sample is unchanged at this point.
3. Allow microphone access the first time you record.
4. Stop recording, then choose “Use this recording” on the confirmation screen.

After you choose “Record,” the original sample is replaced only when you later choose “Use this recording.”

Trim the waveform

Move START and END on the waveform to show TRIM. Running TRIM overwrites the sample with the current range.

Shape the sound

Change playback behavior

GATE

Plays only while the pad is held.

LOOP

Repeats the selected playback range.

ROLL

Repeats the sound at the selected roll rate.

CHOKE

Stops sounds in the same group when another sound in that group plays.

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1. 1
   Split point

   A vertical marker is placed at the playback position and numbered from left to right.

2. 2
   CANCEL / SLICE IT

   CANCEL discards the temporary slices. SLICE IT saves them to pads.

3. 3
   Source sample

   This is the selected source pad. The source pad itself cannot be a destination.

4. 4
   Destination pads

   “+” means available. A red pad with a SLICE number is already assigned.

1. Select the pad containing the source sample, then tap SLICE. The source sample starts from the beginning.
2. While it plays, tap a destination pad. A vertical marker appears on the LCD at the current playback position.
3. Tap the same destination pad again to move its point to the new playback position.
4. When source playback ends with at least one point assigned, temporary slices are created automatically.
5. During preview, drag a numbered vertical marker left or right to adjust it. A marker cannot cross its neighbors.
6. Tap an assigned pad to audition it, then tap SLICE IT to save when it sounds right.

If the source reaches the end before you add a point, playback automatically restarts from the beginning.

Saved pad contents do not change until you tap SLICE IT. Tap CANCEL to discard the temporary slices and leave all pads unchanged. The source pad is also preserved.

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1. 1
   Sequence grid

   Tap cells to turn 16th-note steps on or off for each pad.

2. 2
   Bar and Swing controls

   Adjust bar count, Swing, and the selected BANK pattern. The large SEQUENCE window also provides play/stop, bar add/remove, previous/next bar, and Swing controls.

3. 3
   Pad selection

   Changing pads or BANK switches to the sequence for the selected BANK.

4. 4
   TRANSPORT

   Control playback and stop.

Step input

BANK A-D each keep their own sequence steps and bar count. BPM and Swing are shared across the project.

1. Select the pad you want to edit.
2. Tap the sequence grid to turn on positions where the sound should play.
3. Press play to check the loop.
4. Select another pad and repeat the same process to add more sounds.

SEQ REC and Sequence

Turn on SEQ REC to move to SEQUENCE mode, then start playback to record pad performance into the 16th-note grid after a 1-bar count-in. On-screen pad input records at the highest Velocity level.

The SEQUENCE LCD always uses the sequence view. One dynamic <PREV/NEXT> button moves the visible bar. The SEQ button in the sequence's upper-left PAD header opens a large SEQUENCE window for editing the same note on/off states. On iPad, the large SEQUENCE view shows all 16 pads without vertical scrolling.

The current SEQ REC records to 16th-note steps. Quantize-off timing offsets, Velocity editing in the sequence, and note-length editing are not supported yet.

Edit in the popup window

Press SEQ in the upper-left of the SEQUENCE mode grid to open the large SEQUENCE popup window. It edits the same selected BANK as the main screen, so any steps you turn on or off here are reflected in the normal SEQUENCE view.

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1. 1
   BANK display

   Shows the BANK being edited. Switching BANK changes to that BANK's own sequence steps and bar count.

2. 2
   Playback and bars

   Control play/stop, Swing, bar add/remove, and previous/next bar from inside the popup. The free plan is limited to 2 Bars.

3. 3
   All-pad sequence

   Rows are pads and columns are 16th-note steps. Tap lit cells to turn each pad's playback positions on or off.

4. 4
   Close

   Closing the popup keeps your edits. Return to the normal screen to keep checking the same BANK sequence.

Adjust timing

Add bars

BAR+ adds a bar, BAR- removes the last bar, and the dynamic <PREV/NEXT> button moves between bars. The free plan is limited to 2 Bars. The Premium plan supports up to 8 Bars.

SEQUENCE effects

In SEQUENCE mode, the four knobs work as DIST., DL. TIME, DL. FBK., and DL. LV.

CLEAR clears the current BANK sequence.

Import and export sequence JSON

Tap IMP EXP to choose IMPORT JSON or EXPORT JSON. You can import or export the sequence BPM, Swing, step data, and SAMPLE parameters as JSON.

IMPORT JSON overwrites the sequence for the currently selected BANK and SAMPLE parameters. Audio files and other BANK sequences are not included.

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1. 1
   Project information

   Shows sample count, missing files, and data size.

2. 2
   Management buttons

   Use NEW, EXP SEQ, and EXP WAV. Open COPY and DELETE from the project row’s “…” menu.

3. 3
   Pads

   Pressing a pad in PROJECT moves to SAMPLE and plays that sound.

4. 4
   TRANSPORT

   Play or stop the saved pattern.

Manage projects

A project stores samples, pad settings, sequences, BPM, and related work data.

Export WAV

1. Tap EXPORT WAV.
2. Choose whether to include effects.
3. Choose the loop count from 1 to 32.
4. Tap “Export WAV,” then choose a share or save destination.

WAV export is a Premium feature.

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1. 1
   MIDI tab

   Choose MIDI at the top of Settings to open MIDI Learn.

2. 2
   MIDI Connections

   Check USB, Bluetooth MIDI, and virtual MIDI source status.

3. 3
   Velocity setting

   Choose whether external pad Velocity controls playback volume.

4. 4
   Assignment targets

   Select a 4×4 pad, knob, panel control, or performance/edit control to learn.

Use an external MIDI controller to play pads, move knobs, and switch modes or banks. MIDI connection, Learn, and incoming control require Premium.

Connect a device

• Connect USB MIDI through a compatible adapter or USB hub.
• For Bluetooth MIDI, choose the device from “Connect Bluetooth MIDI.” This is separate from Bluetooth audio settings.
• Virtual MIDI sources on the same device are also supported. The source name appears under MIDI Connections after connection.

Assign with MIDI Learn

1. In Settings > MIDI, select a pad in the 4×4 grid or choose another target from the lists.
2. When “Assign MIDI to {target}” appears at the top, follow the instruction and operate the desired key, pad, knob, or button once. The MIDI Learn status remains fixed at the top while you scroll.
3. In the “MIDI signal received” dialog, check the NOTE or CC number, MIDI channel, and target, then choose Assign.
4. If the same signal is already assigned elsewhere, confirm the replacement to remove the older assignment.

Assignable controls

• PAD 1–16: Assign Note On/Off. Physical pad positions share one assignment across BANK A–D and play the sound in the currently selected bank.
• KNOB 1–4: Assign CC. They control PITCH/CUTOFF/RESONANCE/AMP in SAMPLE and DIST./DL. TIME/DL. FBK./DL. LV in SEQUENCE.
• Panel: Assign Note or CC to SAMPLE/SEQUENCE/PROJECT, BANK A–D, TAP, SEQ REC, PLAY/STOP, and METRO.
• Performance/editing: Assign Note or CC to REVERSE, NORMALIZE, MUTE, GATE, LOOP, ROLL, and CHOKE.

When “Use Velocity for volume” is on, pad Velocity 1–127 maps continuously to volume. When off, pads always play at maximum velocity. Knob CC values 0–127 map to each on-screen parameter range. MIDI 1.0 Running Status is supported when Note or CC data spans multiple CoreMIDI packets.

Storage, removal, and limits

Assignments are shared by all projects. Non-pad assignments can be removed from their rows. When you select an assigned pad, “Unassign” appears to the left of “Cancel” in the header. It removes that pad assignment and ends Learn. Removing all clears MIDI settings only; projects, samples, and purchase state are not changed. Saved assignments remain if Premium entitlement cannot be confirmed, but incoming MIDI control is disabled.

Master volume is not available in the current UI and cannot be assigned with MIDI Learn. BPM−/+, SAMPLE REC, ADSR, sequence QTZ/SWING/BAR/STEP, CLEAR, deletion, reset, purchases, file selection, project management, and confirmation dialogs also cannot be assigned. MIDI Clock, MIDI output, Program Change, Pitch Bend, NRPN, and relative encoders are not supported.

The Premium plan is a one-time purchase. Check the App Store purchase screen for the current price. After reinstalling or changing devices, use Settings > About > Restore Purchases.

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1. 1
   Premium plan

   Shows purchase information and Restore Purchases.

2. 2
   Legal information

   Opens Terms of Use, EULA, and Privacy Policy.

Terms of Use

The terms define app usage conditions, prohibited actions, disclaimers, and Premium plan information.

The Terms also cover external MIDI compatibility, connections, latency, dropped signals, unintended input, support scope, and discontinuation of the App's distribution, updates, or support.

Privacy Policy

Recorded audio, imported samples, and project data are stored in the app’s local container and are not sent outside the device without user action. When sharing or exporting, the user chooses the destination.

The linked Terms of Use and Privacy Policy pages are currently provided in Japanese.

Sample import

Microphone recording

Pads and sequence

Save and export