Detail 01
2.1mm barrel, standard polarity
Center negative, the common 9V pedal standard. Won't work with center-positive pedals without a polarity reverse cable.
Product detailSKU #1273887996413
Voodoo LabPPY Voltage Doubler Cable 2.1 mm Standard Polarity - 18" Black
Independent shopping perspective
The Korena take
Short doubler cable that splits one 2.1mm supply output into two center-negative pedals. For adding a pedal when your board's power supply is full.
Strong match
Who this is for
- Powering two low-draw pedals from one supply output
- Freeing up an isolated output on a crowded board
- Small boards where 18 inches reaches most spots
Consider the trade-offs
When to look elsewhere
- Pedals needing isolation from each other — they share one output
- High-draw digital pedals that exceed the output's mA rating
- Reverse-polarity (center positive) pedals — this is center negative
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
Doubler (Y-cable)
Both pedals draw from one output, so their current draws add together and they share a ground.
Detail 03
18 inches
Enough slack to reach across a small board or around a larger pedal, not across a full pedaltrain.
Detail 04
Passive cable
No conversion or regulation. Voltage and current stay whatever the supply output already provides.
Final check
Know before you order
- 01Add both pedals' mA draw and confirm the output can supply the total
- 02Sharing one output removes isolation — can introduce noise between the two pedals
- 03Cable only. No power supply included
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does this work with any power supply?
Any supply with a 2.1mm center-negative output. It plugs into one output and splits it into two identical ends.
02Will it cause noise or hum?
It can. The two pedals share a ground and an output, so you lose the isolation that separate outputs give you.
03Can I power a 9V and an 18V pedal with it?
No. Both ends carry the same voltage as the output you plug into.
04How many pedals can I run from it?
Two. The limit is current — both pedals' draw combined must stay under what that single output supplies.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Black
