Alesis ASP1SPMKII - Universal Square-Style Sustain Pedal

Alesis ASP1SPMKII – Universal square-style (low-profile) sustain pedal with polarity switch

The Alesis ASP1SPMKII (ASP-1 MKII) is a compact and rugged square-style momentary sustain pedal / footswitch designed to work with virtually all keyboards, digital pianos, synthesizers, and MIDI controllers . Its action is fast and quiet for immediate response in the studio or on stage, and features a polarity switch for universal compatibility with equipment requiring a non-latching momentary switch. A fixed 1/4” (6.35 mm) cable is included for immediate use right out of the box, and a low-profile, non-slip base keeps the pedal firmly on the floor.

Main features

• Square, low-profile style : compact and lightweight format that takes up little space and remains stable thanks to its non-slip base.
• Momentary (non-latching) footswitch : ideal as a sustain switch for keyboards or as a momentary switch on compatible equipment.
• Polarity switch : ensures compatibility with most makes and models.
• Fast and quiet operation : designed for recording, live performance and daily practice.
• Fixed cable of ≈1.52 m (5 ft) terminated in 1/4” jack for immediate connection.

Product benefits

• Hassle-free compatibility with keyboards, digital pianos, and controllers thanks to polarity switching.
• Reliability and comfort : robust construction, non-slip base and silent mechanism for intensive use.
• Portability : Low profile design fits in any bag or flight case.

Use cases

• Piano/Keyboard: Traditional sustain function.
• MIDI controllers and modules: as an assignable momentary switch (e.g., start/stop, punch-in, or hold ), provided the device expects a momentary pedal.

Compatibility Notes

• The ASP1SPMKII is a square-style momentary pedal . If you prefer an acoustic piano feel, Alesis offers the ASP-2 (piano-style) model.
• This is not a continuous expression pedal; for continuous volume/modulation functions, a dedicated expression pedal is required.

Description for projects

Alesis ASP1SPMKII (ASP-1 MKII) momentary sustain pedal/footswitch, low-profile square style , polarity switching for universal compatibility; fast, quiet action ; ≈ 1.52 m fixed cable with 1/4” (6.35 mm) jack ; non-slip base; use with keyboards, digital pianos, synthesizers and MIDI controllers.