Buying in keyboards pianos can mean two very different decisions: are you trying to add a small accessory to an instrument you already own, or are you shopping for the main keyboard itself? This group spans compact sustain pedals, a passive instrument direct box, and a used Casio professional keyboard, so the right choice depends less on a single "best" item and more on the role you need filled.
Quick take
- Best for a piano-style pedal feel: M-Audio SP-2 Professional Piano Style Sustain Pedal. J6, because it is listed as a sustain/damper pedal for piano use.
- Best compact keyboard pedal: Vintage Yamaha FC5 Electronic Keyboard Compact Foot Switch Style Sustain Pedal, because it is described as compact and for electronic keyboard.
- Best signal-routing accessory in this set: Radial ProDI 1-channel Passive Instrument Direct Box, because it is a 1-channel passive instrument direct box rather than a keyboard or pedal.
- Best full instrument choice: Casio PX-5S Professional. Great piano sound and feel, because it is the only electronic keyboard in the group and is listed as lightweight.
Listed price comparison
The spread runs from a low-cost used Yamaha sustain pedal to a much higher listed Casio keyboard. That range is expected here because accessories and a full electronic keyboard are being compared side by side.
| Product | Listed price | Relative price |
|---|---|---|
| Vintage Yamaha FC5 Electronic Keyboard Compact Foot Switch Style Sustain Pedal | USD 13.00 | |
| M-Audio SP-2 Professional Piano Style Sustain Pedal. J6 | USD 29.99 | |
| Radial ProDI 1-channel Passive Instrument Direct Box | USD 134.99 | |
| Casio PX-5S Professional. Great piano sound and feel | USD 650.00 |
Decision matrix
If you need a sustain pedal
Start with the two pedal listings. The Yamaha FC5 is the simpler compact foot-switch-style choice for an electronic keyboard setup, while the M-Audio SP-2 is framed as a piano-style sustain/damper pedal for piano use. If your priority is compactness, the Yamaha title and features point more directly to that. If your priority is a pedal described around piano-style sustain, the M-Audio is the closer match.
If you need a keyboard, not an accessory
The Casio PX-5S is the only item here that fills the main-instrument role. It is listed as a used, white electronic keyboard with a lightweight feature and a title that emphasizes piano sound and feel. The limitation is that it sits at the top of this set's price range, so it is not competing directly with the pedals on cost or purpose.
If your setup involves instruments going into audio gear
The Radial ProDI is not a keyboard or a sustain pedal. It is a passive mono direct box described for acoustic guitars, bass guitars, electric pianos, and synthesizers. That makes it more relevant when the shopping need is connection and signal handling for instruments, rather than adding pedal control or buying a keyboard.
If condition matters most
Condition varies across the group. The Radial ProDI is listed as new. The M-Audio SP-2 is open box. The Yamaha FC5 and Casio PX-5S are used. That does not decide the best pick by itself, but it does help separate accessory shopping from instrument shopping when two items seem close in purpose.
Concise product notes
M-Audio SP-2 Professional Piano Style Sustain Pedal. J6
The M-Audio SP-2 is the clearer pick for shoppers who want a pedal described specifically as a professional piano style sustain pedal. It is listed for piano, with model SP-2 and type sustain/damper, so it fits a buyer focused on expressive pedal control rather than a compact foot-switch form. The open box condition may appeal if you are comparing it against used accessories while still wanting a piano-style design. Its main limitation is scope: it is only an accessory, not a keyboard, and the provided instrument use points to piano rather than broadly naming every keyboard setup.
Vintage Yamaha FC5 Electronic Keyboard Compact Foot Switch Style Sustain Pedal
The Yamaha FC5 stands out for a simple reason: it is the lowest-listed item in the group and is explicitly a compact foot-switch-style sustain pedal for electronic keyboard. The compact feature and Yamaha FC5 model wording make it a sensible match for someone who wants a small pedal accessory rather than a piano-style pedal housing. It is also listed with Japan as country of origin and used condition. The tradeoff is that it is positioned as a compact foot switch, so shoppers wanting a more piano-style pedal shape may find the M-Audio SP-2 more aligned with that preference.
Radial ProDI 1-channel Passive Instrument Direct Box
The Radial ProDI belongs in a different lane from the two sustain pedals. It is a 1-channel passive instrument direct box, with model and mpn shown as R800 1100, and the description points to mono instrument use with acoustic guitars, bass guitars, electric pianos, and synthesizers. Choose it when the problem is connecting an instrument into audio gear rather than changing how a keyboard sustains notes. The key limitation is that it does not replace a pedal or a keyboard: its role is signal-related, so it should only rise to the top when that is the accessory you actually need.
Casio PX-5S Professional. Great piano sound and feel
The Casio PX-5S is the only full electronic keyboard here, so it is the direct choice if you are not merely adding an accessory. It is listed as a used white Casio PX-5S with a lightweight feature, and the title itself emphasizes professional use along with piano sound and feel. Compatibility wording names several brands, including Casio, Korg, Kurzweil, Nord, Roland, and Yamaha, which may matter for shoppers comparing broader keyboard setups. The obvious limitation is price and category: it is far above the accessory listings and is used, so it makes sense only if you need the instrument itself.
Final recommendation
For most shoppers comparing these four items, the first decision is whether you need the main instrument or an add-on. If the goal is a full electronic keyboard, the Casio PX-5S Professional. Great piano sound and feel is the only option in that role, with the listed USD 650.00 price reflecting its place at the top of the set.
If you already have a keyboard or piano and just need sustain control, narrow the choice to the two pedals. Pick the Vintage Yamaha FC5 Electronic Keyboard Compact Foot Switch Style Sustain Pedal at USD 13.00 if compactness and electronic keyboard use are the priority. Pick the M-Audio SP-2 Professional Piano Style Sustain Pedal. J6 at USD 29.99 if the words piano style and sustain/damper better match what you want.
Choose the Radial ProDI 1-channel Passive Instrument Direct Box at USD 134.99 only when your need is a passive 1-channel direct box for instruments such as electric pianos or synthesizers. It is a useful comparison point in a keyboards pianos setup, but it solves a different problem than a sustain pedal or a keyboard.