Detail 01
4.5V output
Uncommon voltage. A 9V supply will likely damage these units, and a 5V USB source won't substitute safely.
Product detailSKU #1274034481742
KORGKA193 4.5V Adapter for PX4, PX4B and PXR4
Independent shopping perspective
The Korena take
Replacement 4.5V power adapter for KORG PX4, PX4B and PXR4 units. Buy it if you lost the original or want to stop burning batteries.
Strong match
Who this is for
- Replacing a lost or failed adapter for a PX4, PX4B or PXR4
- Keeping a PXR4 running on a desk without battery swaps
- A spare to leave in a second practice location
Consider the trade-offs
When to look elsewhere
- Any KORG gear outside the PX4, PX4B and PXR4 — voltage won't match
- Players needing a 9V pedal supply for stompboxes
- Anyone wanting battery-free portability away from an outlet
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Model-specific to PX4, PX4B, PXR4
Built for those three units. Matching plug size and polarity is why a generic adapter often won't do.
Detail 03
Wall adapter, not a battery pack
Ties the unit to an outlet. Batteries remain the option for recording away from power.
Detail 04
Around $11.50
Priced as a replacement part. Cheaper than repeatedly replacing batteries in a unit you use daily.
Final check
Know before you order
- 01Confirm your unit is a PX4, PX4B or PXR4 before ordering — voltage is model-specific
- 02No batteries, cables or mounting hardware included
- 03Check the plug's inner diameter and polarity against your unit's DC-in jack
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use a standard 9V pedal adapter instead?
No. These units take 4.5V. A 9V supply can damage them. Use the adapter matched to the model.
02Will this work with other KORG products?
It's specified for the PX4, PX4B and PXR4. Other KORG gear generally uses different voltages and plug sizes, so check your unit's requirement.
03Does this let me run the unit without batteries?
Yes. It powers the unit from a wall outlet, so you can leave batteries out for desk or studio use.
04Is a power supply included with the PXR4 itself?
This is sold as a separate adapter. If your unit shipped without one or you've misplaced it, this is the replacement.
