The Boss/Roland SP-404 sampler series has maintained a devoted following for over 20 years, particularly among live performers, DJs, and hip-hop producers. Recently, its popularity has surged in the Lo-Fi beats scene, prompting Roland to release an enhanced MkII model.

The new SP-404 MkII preserves the familiar workflow while introducing modern improvements. Notable upgrades include an expansion from 12 to 16 pads, a new graphical interface with waveform editing capabilities, and USB-C connectivity for both power and audio interfacing. While the built-in mic has been removed, the unit now offers USB sampling from class-compliant devices and improved audio connectivity with proper line-level jacks.

The device maintains its core identity as a performance-oriented sampler and effects processor. Projects can now hold 160 samples (up from 120) across 10 banks, and the unit can store 10 projects in memory instead of just one. The MkII introduces several workflow enhancements, including a "Snapback" feature that captures the last 25 seconds of audio output, and a new sample chopping function that allows for easy beat slicing using manual markers or transient detection.

Pattern recording remains real-time only, without step sequencing, but the Pattern Chain mode now allows for more sophisticated song structuring. Users can sequence patterns on a 16-part grid and store multiple chains per project. The effects section has been expanded to four buses, with six main performance effects buttons providing quick access to filters, delays, and various sound processors.

The new DJ Mode splits the unit into two decks for track playback and mixing, making it suitable for live performance and DJ sets. The included software companion app enables remote control, sample management, and easy file transfer between the device and a computer.

While the SP-404 MkII maintains some limitations – like the lack of step sequencing and post-recording quantization – it excels as a creative tool for quick sampling, live performance, and beat-making. Its workflow encourages immediate creativity and live resampling rather than precise grid-based editing, making it particularly suited for producers who prefer a more organic, performance-based approach to music creation.

Pros:

• New chopping and pattern resampling features
• Audio over USB
• "Snapback" retrospective sampling
• Improved interface with graphical display

Cons:

• Limited sequencing capabilities
• Complex workflow for some tasks
• Removal of built-in mic
• 16-minutes restriction of max sample size (180 minutes in SP-404A/ SP-404SX which allowed to record a session)