Manuals & Resources

12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug

This regulated 12 VDC 5A power supply is ideal for replacing lost or damaged power supplies from your electronic devices or as a foundation for new projects.
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Part # 120-056
  • Efficient and reliable switching power supply
  • UL listed, CE and FCC approved
  • 12V regulated DC output at 5 amps
  • 2.5 mm x 5.5 mm x 9 mm plug

Product Details

12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug

Switching power supplies are reliable, compact, and efficient. This regulated 12 volt DC power supply provides ample current to run many popular 12V devices. Use it to replace a lost or damaged power supply for AV equipment, office devices, battery chargers, and other electronic components. UL listed and FCC approved. Detachable 6 ft. input cord. Power input: 100~240 VAC, 50/60 Hz. Output connector: 2.5 mm x 5.5 mm x 9 mm, center positive.

Product Specifications
  • DC Output Voltage12V
  • Current Capacity5000 mA
  • Center/Tip PolarityCenter (+)
  • Plug Size2.5 x 5.5 mm
  • Input Voltage100~240 VAC
12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug
  • BrandParts Express
  • Part Number120-056
  • UPC844632095719
  • Product CategoryAC/DC Power Adapters
  • Unit of MeasureEA
  • Product Rating
    (9 Reviews)
  • Weight0.9 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.

View similar products to the 12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug
in the AC/DC Power Adapters product category.


12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug
12 VDC 5A Switching Power Supply with 2.5 x 5.5mm Plug is rated 5.0 out of 5 by 9.
Rated 5 out of 5 by from Very Efficient Power SupplyI purchased this power supply to use on a Lepai - LP-2020A+ T-Amp to replace the 3 amp power supply that came with it. It made a good difference in the amount I could turn up the volume on the T-Amp using a set of low sensitivity 81dB 4 ohm bookshelf speakers I custom built. I liked that this power supply runs stone cold when a load is put on it & is very efficient. It never fluctuated & stayed at a solid 12.2 volts on my digital multi-meter. I also liked that the green power light is dim & not bright as the sun, like some power lights on other power supplies. So it won't be distracting if it is right in front of you during use. Its is well designed & reliable so you can buy one in confidence. You really can't go wrong with Parts Express products.
Date published: 2015-09-26
Rated 5 out of 5 by from Worked Great!Used as a power supply for eight security cameras utilizing an octopus/ spider adapter to supply 12vdc to each camera. Also used to provide 12vdc to a security camera monitor.
Date published: 2015-02-15
Rated 5 out of 5 by from good value for a great productGreat product, fast delivery, good value. will definetely shop here again.
Date published: 2014-08-27
Rated 5 out of 5 by from Works GreatVery noticeable improvement in my Lepai 20/20 sound. used instead of my Flat Screen sound
Date published: 2014-08-14
Rated 5 out of 5 by from Well Made - Good PriceNice well made PS. Cables are supple and don't have a "recoil" memory. Great price. Does what it is supposed to do!
Date published: 2014-07-17
Rated 5 out of 5 by from Very Good Power SupplyI have only had this power supply one week. I am quite pleased with its performance. It makes all the difference with this amp. It enables the amp to operate at its full potential.
Date published: 2014-07-12
  • 2015-11-28T06:45CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_9
  • loc_en_US, sid_120-056, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

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 5A Switching Power Supply with 2.5 x 5.5mm Plug

Could this be used to charge the Power-Sonic PS-1270F2 battery? I am trying to use this to power the Lepai 2020+ amp as well as charge the battery when the amp is switched off.

Asked by: JustinWCampbell
No I would not recommend using this to charge a battery.
Answered by: MattP
Date published: 2015-07-28

Will this work for a Sylvania model 800 monitor (circa 2003)? - I happen to like the square screen! It reads dc in 12v5a.

Asked by: vonbrock
This will work in terms of power output, but we cannot guarantee the plug will be the same size.
Answered by: MattP
Date published: 2015-05-04

I have a power supply from a CCTV Box that fried. The unit says MODEL: SEA36-12.0-3000 Input:100-240VAC, 50/60Hz, 0.5A Output: 12V 3000mA Can this unit be substituted with success?

Asked by: Tony0131
Yes this will work in terms of output power, but there is no way of knowing if the plug size will be the same.
Answered by: MattP
Date published: 2015-04-22

Will this work for a DVR Standalone. The one I have fried and it says ( Input: AC 100-240v-1.3A47-63 Hz, Output : DC 12v - 5.0A)

Asked by: Superleemer
Yes this will work for that application.
Answered by: MattP
Date published: 2015-03-17

does it fit Lepai amp without modification?

Asked by: gychang
The Lepai amplifier requires a 2.1mm x 5.5mm plug, so this will fit but it may have an intermittent connection.
Answered by: MattP
Date published: 2014-12-16

Looking to replace an adapter for  and LED Technologie DPL red light therapy unit. Lost part of the adapter. Current one is: 100-240V - 1.5A 50-60HZ. Output: DC12V  3.0Amax.   Can you tell me if this will this work for this unit? Thank you.

Asked by: Elena
Yes this will work in terms of power output. There is no guarantee the plug will fit, but it is a pretty common size.
Answered by: MattP
Date published: 2014-11-11
  • 2015-11-28T07:33CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_22
  • loc_en_US, sid_120-056, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational
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