Bug Fixes
The following bugs have been fixed.
The system may hang during certain operations.
When selecting a folder, the icon to move to the parent directory does not appear.
Version 5.50 — 1 Apr 2026
Functionality Improvements
SIDE CHAIN COMPRESSION has been added.
Please refer to the "Reference Manual" for detailed information in the [ Owner's Manuals. ].
SDXC cards in Microsoft exFAT format were supported.
Bug Fixes
Minor bugs were fixed.
Version 5.01 — 1 Jul 2025
Functionality Improvements
The following parameters were added to SYSTEM - GENERAL.
"App Auto Connection"
"Start-up screen"
For details, refer to the [ Reference Manual ].
Version 5.00 — 1 Apr 2025
Functionality Improvements
You can now operate the Serato DJ from the SP-404MKII.
Please refer to the "Using Serato DJ with the SP-404MK2" for detailed information in the [ Owner's Manuals. ].
You can now operate the Studio Lite / Serato Studio Pro from the SP-404MKII.
Please refer to the "Using Serato Studio with the SP-404MK2" for detailed information in the [ Owner's Manuals. ].
The current settings (how to start resampling) are now shown when resampling.
When resampling, you can now select a Sound Generator to trigger resampling. (The Sound Generator is now accessible when resampling begins.)
You assigned MIDI CC (transmit) to the [CTRL 1]–[CTRL 3] knobs.
SKIP BACK SAMPLING can now be used in DJ MODE (PAD Mode).
The SP-404MKII startup screen has been changed.
Bug Fixes
The following bugs have been fixed.
The unit restarts when you perform certain operations in DJ MODE.
In LOOPER, when you record a PATTERN SEQUENCER to LOOPER, the sound does not record correctly under certain conditions.
The Effect Parameter name (resonator) is incorrect.
Minor bugs.
Version 4.07 — 1 Nov 2024
Bug Fixes
The following bugs have been fixed.
If you import multiple samples at once, they will all become the same sample.
When editing a sample name, it is not saved correctly under certain conditions.
Minor bugs.
Version 4.06 — 1 Oct 2024
Functionality Improvement
In DJ MODE, the progress bar is now displayed while samples are being imported from the SD card.
Bug Fixes
The following bugs have been fixed.
Crash when importing a sample with a filename longer than 80 characters.
Crash occurs under certain conditions when importing samples from an SD card in DJ Mode.
When "Type:Noise2" is selected in Sound Generator, Level does not work properly.
The USB Audio Level Meter is displayed with L/R reversed.
The peak indicator function of the [EXT SOURCE] button does not work properly under certain conditions.
When recording an empty pad to the sequencer, the Note Off is not recorded correctly.
In the MUTE GROUP setting, pressing a pad that is playing in PAD MODE stops the sound.
Minor bugs.
Version 4.05 — 1 May 2024
Bug Fixes
The following bugs have been fixed.
Crashes when Sampling/Resampling is performed after importing a Sample (IMPORT SAMPLE).
When exporting a Project, all folder names become "PROJECT1".
MULTIPAD EXPORT may not export the selected pattern.
While recording with LOOPER, recording cannot be stopped in Chromatic Mode.
The Melodics app does not work properly when "MIDI Sync Out:ON" is set.
END SNAP does not work in Ver.4.04.
< SP-404MKII App >
Roll settings (triplets) are not displayed correctly.
Overwriting the SP-404MKII pattern from the SP-404MKII App corrupts the pattern data.
If you delete all tracks in your DAW while the SP-404MKII App's VST plug-in is running, the SP-404MKII App crashes.
Version 4.04 — 1 Apr 2024
* Please refer to the "SP-404MKII Reference Manual (Version 4)" for detailed information in the [ Owner's Manuals ].
Additional Functions / Functionality Improvements
Added "LOOPER" for overlapping samples.
Added "GROOVE" to add rhythmic characteristics to samples.
Added "MULTIPAD EXPORT" which converts phrases recorded in patterns into audio for each Pad.
Added the ability to bounce Pattern Chains (convert them to samples).
"Koala Sampler" can now be operated from SP-404MKII.
Please refer to the "Using Koala Sampler with the SP-404MK2:Setup Guide" for detailed information in the [Owner's Manuals].
Added "SOUND GENERATOR" to create bass sounds etc.
Added "MICROSCOPE" to edit patterns note by note in TR-REC.
A Tap Recording function has been added to TR-REC.
Added "SAMPLE MERGE" to combine multiple samples into one sample.
A function has been added to set the number of measures to sample when Sampling/Resampling.
A level meter is now displayed when Sampling/Resampling.
When Sampling/Resampling, it is now possible to control using external MIDI start/stop commands.
Added "RENAME" to edit sample and project file names using SP-404MKII main unit operations.
Added "IMPORT PROJECT (SP-404SX)" to import SP-404SX / SP-404A projects.
Added the ability to directly load Project files saved on the SD Card.
Added the ability to import samples saved on the SD Card in DJ mode.
Increased the number of scale types in Chromatic Mode.
Added the ability to record ROLL in Patterns.
Increased the number of roll interval types for sample playback.
Added "DJFX Delay".
Added FILTER+DRIVE / RESONATOR / DELAY / ISOLATOR / DJFX LOOPER to MFX.
When swapping BUS 1 / BUS 2 effects, the effect parameter values are now retained.
Added "Pad Color <SAMPLE>" to set the pad lighting color for each sample.
Pads to which no samples have been set (Blank Pads) will no longer light up when the screen saver is displayed.
Added a function to forcibly mute when samples from other banks are played.
[...]
Version 3.02 — 1 May 2023
Bug Fix
The following bug have been fixed.
In SP-404MKII Ver.3.01, resampling does not start even if the pad is pressed during "COUNT-IN:WAIT".
Tracked in 12 rigs on FW//RADAR.
Owners of the Roland SP-404 MKII on FW//RADAR also track