The Microdesignum MIDI Piccolo 4F is a simple foot MIDI controller with four footswitches, numbered 1 to 4, for controlling four presets of a guitar effects unit or four channels of a guitar amp1. It is part of Microdesignum's Piccolo line of small MIDI pedals, alongside the display-equipped MIDI Piccolo 4S1D and the two-footswitch MIDI Piccolo 2F1D.
Four footswitches, four presets
The controller has four footswitches numbered 1 to 4, and an LED near each one indicating that the footswitch, meaning the preset, is on1. When a footswitch is pressed, a Program Change message on channel 1 is sent to the MIDI output with a value according to the footswitch: the first footswitch sends Program Change 1, the second sends Program Change 2, and so on1.
| Footswitch | MIDI message sent | LED |
|---|---|---|
| 1 | Program Change 1, channel 1 | Yes |
| 2 | Program Change 2, channel 1 | Yes |
| 3 | Program Change 3, channel 1 | Yes |
| 4 | Program Change 4, channel 1 | Yes |
For players who need to step through more than four programs, the Piccolo 4S1D takes a different approach: its two footswitches, labeled ◂Program and Program▸, decrease and increase the program number shown on a display and send it as a Program Change to the MIDI output3. The smaller Piccolo 2F1D works the same way, and Microdesignum positions it as a smaller and cheaper replacement for the TECH21 MIDI Mouse controller2.
Power and connections: one MIDI cable
The MIDI Piccolo 4F connects to the controlled device with a single MIDI cable that conducts both the MIDI signal and the power supply1. There is no separate power connection at the controller end, which keeps the pedalboard wiring to one cable.
The wider Piccolo family handles power in two ways. The 4S1D and 2F1D manuals describe connecting an included power supply adapter to a supply socket in the controller34, while the 2F1D product page also specifies phantom supply via the MIDI cable: either AC or DC voltage of 8 to 15 V on pins 6 and 7 of a DIN7 connector, with the MIDI OUT as a legacy DIN7 connector carrying that phantom supply2. The 2F1D also has a MIDI IN input for merging a MIDI signal from another device2.
The Piccolo 4F's single-cable power depends on the controlled device supplying power over the MIDI connection. Players whose gear does not provide phantom power over MIDI should confirm how their unit is wired before relying on the one-cable setup.
Kemper Profiler variant and other versions
Microdesignum offers a complete MIDI Piccolo 4F configured for the Kemper Profiler, sending Control Change messages 50 to 53 for switching slots on the Kemper1. This is the variant to look for if the goal is slot switching rather than preset recall.
The product page also lists a standalone module version of the Piccolo 4F without footswitches, marked as available later1. Microdesignum has a history of this format: the Piccolo 2F1D is sold both as a module without footswitches at 120.00 USD and as a complete controller in a box at 213.00 USD2, and a specially adjusted 2F1D variant serves as a MIDI footswitch controller for the EHX V256 vocoder5.
Price
Microdesignum's product page lists the complete MIDI Piccolo 4F controller sending Program Change 1 to 4 at 170.00 USD1. The same page also carries a 150.00 USD figure, and the two listings disagree, so the price a buyer pays depends on which listing and configuration applies at the time of order2.
Questions
What MIDI message does each Piccolo 4F footswitch send?
Each press sends a Program Change message on MIDI channel 1, with the value matching the footswitch: footswitch 1 sends Program Change 1, footswitch 2 sends Program Change 2, and so on through footswitch 4. An LED next to each footswitch shows which preset is on.
Does the Microdesignum MIDI Piccolo 4F need a separate power supply?
No. The controller connects to the controlled device with a single MIDI cable that carries both the MIDI signal and the power supply, so there is no separate adapter or wall wart at the pedalboard end.
Can the MIDI Piccolo 4F switch slots on a Kemper Profiler?
Yes. Microdesignum offers a Kemper Profiler variant of the complete MIDI Piccolo 4F that sends Control Change messages 50 to 53 for switching slots on the Kemper Profiler, instead of the standard Program Change 1 to 4 configuration.
How much does the MIDI Piccolo 4F cost in US dollars?
Microdesignum's product page lists the complete MIDI Piccolo 4F controller sending Program Change 1 to 4 at 170.00 USD, and another listing on the same page shows 150.00 USD. Check which configuration the price covers before ordering.
Is there a version of the Piccolo without footswitches?
Yes. Microdesignum lists a standalone module version of the MIDI Piccolo 4F without footswitches, marked as available later. The related MIDI Piccolo 2F1D is also sold as a module without footswitches at 120.00 USD.
Sources (5)
- MIDI Piccolo 4F, Microdesignum
- MIDI footswitch controller for PROGRAM CHANGE, Microdesignum
- Manual for MIDI Piccolo 4S1D, Microdesignum
- Manual for MIDI Piccolo 2F1D, Microdesignum
- MIDI footswitch controller for EHX V256 vocoder, Microdesignum






