12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug

Brand:| Model: PS-SP11111
12V 3A DC power supply with over-current, over-voltage, and short-circuit protection.
  • High quality DC power supply
  • Convenient plastic case with attached lead
  • Comprehensive circuit protection
  • Perfect for use with Class T amplifiers with less than 36W of output
Part # 
Weight: 0.45 lbs.  
Regular Price$15.50
Sale Price
Part # 320-312
Qty:  EA
Available Payment Methods

Product Details

12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug

12V 3A DC power supply with over-current, over-voltage, and short-circuit protection. Designed for use with the 2 x 3 watt, 2 x 8 watt, and 2 x 15 watt Class-D amplifier boards. Includes 6 ft. IEC power cord. Dimensions: 100 mm (L) x 50.40 mm (W) x 30.90 mm (H). 2.1 x 5.5 mm tip.

Product Specifications
  • DC Output Voltage12V
  • Current Capacity3000 mA
  • Center/Tip PolarityCenter (+)
  • Plug Size2.1 x 5.5 mm
  • Input Voltage100~240 VAC
12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug
  • BrandParts Express
  • ModelPS-SP11111
  • Part Number320-312
  • UPC844632088148
  • Product CategoryAC/DC Power Adapters
  • Unit of MeasureEA
  • Product Rating
    (4 Reviews)
  • Weight0.45 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug
12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from 12vdc power adapter 3aI'm using this to power up a home built led lighting project. It does the job very nicely. I built an led light array with micro switches to give lighting for lower kitchen cabinets. Lights come on when the doors are opened. All doors can be opened turning all 66 led bulbs. It powers them all just fine.
Date published: 2014-10-26
Rated 5 out of 5 by from Good pruchaseGreat replacement for many different components. 5/5.
Date published: 2014-07-25
Rated 5 out of 5 by from Parts Express Cannot Be OutdoneAs usual, when I need a component I turn to Parts Express and they never let me down. They always have the items that a serious tech buyer requires. This case is no different. I needed a solid 12V @ 3ADC supply, and yes! there is was at Parts Express. The product fits my needs perfectly and the shipping is always fast!
Date published: 2013-02-27
Rated 5 out of 5 by from Works great with small amplifiers and LEDsI've used this power supply many times for many different projects. Would highly recommend to anyone needing a 12V power supply.
Date published: 2012-04-11
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
12 VDC 3A AC Power Adapter with 2.1 x 5.5mm Plug

will this fit on all lepai amplifiers?

Asked by: jo marble
Yes for most of the Lepai amps the parts express carry. (2.1mm connection.) The large class D LP7498E uses the 2.5mm plug.
Answered by: TomI
Date published: 2015-02-09

Is this power supply regulated? Is that what over-current and over- voltage protection mean? I need a 12v DC 2.5A supply capable of handling 20W with a 2.1mm adapter barrel. Would this one work?

Asked by: landerson
This is indeed a regulated supply. That just means that this maintains 12 volts no matter what the current draw is. That is what the over voltage protection is. The over current will shut down the unit if too many amps start to flow in case of a short or something of that nature.This sounds like it will work well with your stated application.
Answered by: Chrisf
Date published: 2014-09-27

I just purchased the SURE 2x15W @ 4 Ohm TA2024 Class-D Audio Amplifier Board. Will this be compatible with it? A friend recommended a vudu power supply but I am not sure which model or how to get one as alternative. 

Asked by: MindfulMoz
Yes this power supply will work well with that amplifier.
Answered by: MattP
Date published: 2014-08-29

I need a new power supply for my Acoustic Authority 5.1 A5640 5.1 Speaker System. I'm looking at Part Express PS-SP11111. The input of Acoustic Authority power supply is 120VAC, 60hZ, 65w and output is 15VDC 2450mA. Will it work?

Asked by: MikeinKannapolis
Unfortunately no, you will need a power supply that has 15V output with 2450 mA capacity or higher. The only 15V power supply we have is for a Peavey product and only offers 1000 mA output.
Answered by: MattP
Date published: 2014-08-20

What polarity is the DC plug? What size (dia.) is the DC plug?

Asked by: Audio Jock
This is a center positive, 2.1mm x 5.5mm plug.
Answered by: MattP
Date published: 2013-10-31

can this power and amp and charge an ipod?

can this power supply be used to power the Dayton Audio DTA-2 Class T Digital Audio Amplifier Module as well as run power to an ipod dock to charge an ipod or iphone? perhaps with some extra parts?
Asked by: munki114
The DTA-2 requires a 12 volt power supply that gives at least 2 amps. This will fit the bill nicely to power that amp.As for an iPod dock, it really depends on the dock. Most docks are designed to get power over USB, which is 5 volts at up to 1 amp.So, there are a few ways to do this.1-The easy way: Buy an iPod dock intended for use in an automobile. These are made to run off of 11-14 volts, so your 12 volt supply will work great. These can be found with a bit of Googling. Then you can wire the 12v power source right to the dock's power cord.2-The DIY (manly) way: Use a voltage regulator to change your 12v into 5v. I have linked the proper regulator below. Look up the 7805 datasheet for a proper circuit. This will require a bit of soldering, the regulator, a heatsink and a couple capacitors. This will allow you to provide 5v power to a regular USB powered iPod dock.3-The h4xx0r way: You could use an existing 12v->5v transformer, like those intended to allow people to charge USB devices in cars. I have one linked below. Wire your 12v power to the end that would plug into the cigarette lighter, solder securely. Then you have 2 available USB ports on the other end that can provide adequate 5v power to any USB devices that may need it, including a regular USB powered iPod dock.Whatever you decide to do, have fun and be safe!
Answered by: Travis Rysdam
Date published: 2012-08-24
  • 2015-03-02T07:53CST
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