Main specifications

Maximum polyphony

32 voices

Recordable Data

Samples: 2,560 (16 samples x 10 banks x 16 projects: stored in internal storage)

Patterns: 2,560 (16 patterns x 10 banks x 16 projects: stored in internal storage)

Internal storage

Size: 16 GB

  • *Include preload data

Maximum sampling time

16 minutes (approximately 185 MB per sample)

Skip back sampling time

Maximum 40 seconds (Always records LINE OUT signal independently of sampling/resample)

Data format

16-bit linear

Import format

WAV, AIFF, MP3 import supported.

  • SP-404MK2 App supports WAV, AIFF, MP3, FLAC, M4A.

Sample rate

48 kHz

Pattern sequencer

Resolution: 480 ticks per quarter note

Pattern length: 1 to 64 bars

Recording method: Realtime Loop Recording (with shuffle quantize function), TR-REC (Automation supported)

Effects

Multi-effects: 42 types

Input effects: 17 types

Pads

16 pads + 1 sub pad (Velocity-sensitive pad)

Controllers

Control knob x 3

Display

Graphic OLED display

External storage

SD card (SDHC compatible, commercially available)

  • For backup, restore, import, and export functions

Connection jacks

PHONES jacks: Stereo 1/4-inch phone type, Stereo miniature phone type

LINE OUT (L/MONO, R) jacks: 1/4-inch TRS phone type (impedance balanced)

LINE IN (L/MONO, R) jacks: 1/4-inch phone type

MIC/GUITAR IN jacks: 1/4-inch TRS phone type (for MIC), 1/4-inch phone type (for GUITAR)

MIDI (IN, OUT) jack: Stereo miniature phone type

USB port: USB Type-C® (Audio, MIDI)

DC IN jack

Power supply

AC adaptor

USB bus power supply (USB Type-C® port, 1.5 A or more)

Ni-MH batteries (AA, HR6) (commercially available) x 6 or Alkaline battery (AA, LR6) (commercially available) x 6

Current draw

1,100 mA (AC adaptor)

1,500 mA (USB bus power)

Expected battery life under continuous use

Alkaline battery: Approx. 2.5 hours

Ni-MH battery (1,900 mAh): Approx. 3.5 hours

  • This can vary depending on the specifications of the batteries, capacity of the batteries, and the conditions of use.

External dimensions

178 (W) x 276 (D) x 71 (H) mm

Weight (excluding AC adaptor)

1.1 kg

Accessories

Quick Start

“Read Me First” leaflet

AC adaptor

Warranty card

Options (sold separately)

TRS/MIDI connecting cable: BOSS BMIDI series, BOSS BCC series

Wireless MIDI Expression Pedal: BOSS EV-1-WL

Wireless Footswitch: BOSS FS-1-WL