Choosing the Right Power Supply for Your M-Audio Keystation 61es MIDI Keyboard

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SUMMARY

The M-Audio Keystation 61es MIDI keyboard requires a power supply with a specification of 9V DC output and 250-300mA current, with a center positive polarity. While the user manual suggests a 300mA supply, M-Audio's official replacement is a 9V 500mA adapter, which is also widely available from retailers. Users can safely use a 9V 300mA adapter, but the 9V 800mA adapter is also acceptable as it exceeds the required current. Input specifications are important, particularly regarding mains voltage, which varies by region.

PREREQUISITES
  • Understanding of voltage and current specifications for power supplies
  • Familiarity with polarity in electrical connectors
  • Knowledge of mains voltage differences by region
  • Basic understanding of MIDI keyboard power requirements
NEXT STEPS
  • Research the implications of using power supplies with different current ratings
  • Learn about the importance of connector polarity in electronic devices
  • Investigate the differences in mains voltage standards across various countries
  • Explore the specifications and compatibility of other MIDI keyboard power supplies
USEFUL FOR

Musicians, audio engineers, and anyone using MIDI keyboards who need to understand power supply requirements and compatibility.

rspaulding
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I need a power supply for my M-Audio Keystation 61es MIDI keyboard, and I think I might have one that will work for it.

The user manual for the keyboard says this:
"You can also use a power adapter (not included) with the following specification: 9V DC output, 250 - 300mA, center positive"

But then their website is selling a 9v 500mA as the proper replacement:
http://www.m-audio.com/products/en_us/PowerSupply9VDC500mA.html

And every other online retailer sells a 500mA supply as the replacement:
http://accessories.musiciansfriend....upply?sku=500930&CJAID=10381297&CJPID=2179950

A little bit confusing, but I have two laying around that might work, one is 9V 800mA and the other is 9V 300mA. Do you think either of these will be safe? If so, which one?

Also, do the "input" specs on the supply matter much?
 
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rspaulding said:
I need a power supply for my M-Audio Keystation 61es MIDI keyboard, and I think I might have one that will work for it.

The user manual for the keyboard says this:But then their website is selling a 9v 500mA as the proper replacement:
http://www.m-audio.com/products/en_us/PowerSupply9VDC500mA.html

And every other online retailer sells a 500mA supply as the replacement:
http://accessories.musiciansfriend....upply?sku=500930&CJAID=10381297&CJPID=2179950

A little bit confusing, but I have two laying around that might work, one is 9V 800mA and the other is 9V 300mA. Do you think either of these will be safe? If so, which one?

Also, do the "input" specs on the supply matter much?

Welcome to Physics Forums.

Looks like your keyboard requires up to 300 ma @ 9 volts. The output of these types of adapters indicate the maximum amount of current they can supply. So the 300mA one you have should work. What you want to make sure of is that the center connector terminal is the positive one (proper polarity).

Yes the "input" specs matter. If you're in the US, mains voltages are 115vac. Other counties mains may be 230vac.
 
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