Question 1

The spec says a Max Current of 300mA. I want to use it for BOSS MT-2 pedal which requires 200mA@9V DC. Can this be used?

Accepted Answer

They've updated the product at least once now, it seems.  I have three I've bought from Amazon with 2013 copyright logos on the bottom, that have "Regulated" printed above the large "ADAPTOR" verbiage, have a 300mA rating, and are a larger cube shape and are much heavier.

The revised version drops the 'regulated' verbiage on the box front, has a 2018 copyright, has a 500mA rating, is a rectangular shape like in the current Amazon photo as of 2020, and is MUCH lighter in weight.

Both have the exact same model number PW-CT-9V, and UPC code 0 19954 95097 2.

Question 2

I've purchased 3 of the 9volt Planet Wave Adapters for my Fender Mini Twin Reverb Amps. When I plug them in, I only get a humming noise. Troy,txs

Accepted Answer

That not a question, but I'll turn it into one and try and answer that question that I just wrote. "Why do I get a humming noise when I plug my planet waves adaptor into a mini twin fender amp?"First off, does your mini twin work with a nine volt battery?  Check that. If not, then the amp's broken. If yes, continue. I just checked, and the mini twin seems to be center negative, like the adaptor. Still, check to see if your mini-twin power in is expecting a center negative power supply.Perhaps the power supply input jack on the mini twin is broken?Perhaps you've gotten three bad power supplies.  Have you checked them with a multimeter?Good Luck.

Question 3

If I have a splitter, how many pedals max should be plugged into one power supply?

Accepted Answer

Hey got to your question late, but I agree with AJ Rugged's answer.  The Planet waves 9V power adapter is designed for use with one device with a power draw of no more than 300mA.  I do not recommend using a splitter for this power adapter, or any single adapter for that matter.  Shop around for a power supply that will power the number of devices you will be using safely.  Perhaps here on Amazon?  Be safe and good luck.

Question 4

Does this power supply work for my dymo label manager 160? it calls for 9v 2a.

Accepted Answer

Absolutely not. 2 Amps is 2000 mA, this supply is rated for 500 mA so it can only supply 25% of the current your device needs.

ASIN	B00191WVF6
Amperage	500 milliamps
Best Sellers Rank	#208 in Musical Instruments ( See Top 100 in Musical Instruments ) #2 in Keyboard Power Supplies
Brand	D'Addario
Built-In Media	Power Adaptor
Color	Black
Connector Type Used on Cable	Barrel Connector
Customer Reviews	4.6 4.6 out of 5 stars (16,900)
Enclosure Material	Plastic
Form Factor	compact
Global Trade Identification Number	00019954950972
Input Voltage	100 volts_of_alternating_current
Item Dimensions	4.72 x 3.15 x 1.57 inches
Item Type Name	Planet Waves 9V Power Adapter
Item Weight	50 g
Manufacturer	D'Addario &Co. Inc
Maximum Power	7.2 watts
Mfr Part Number	PW-CT-9V
Model Number	PW-CT-9V
Output Current	800 milliamps
Output Voltage	9 volts
Output Wattage	4.5 watts
Specification Met	NEMA
UPC	019954950972
Unit Count	1 Count
Warranty Description	Replaced if defective.

Accessories PW-CT-9V DC Power Adapter – Pedalboard Supply - For Pedal Board and Other Devices Requiring 9V – 800mA Max Current

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