Manuals & Resources

Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

Brand:|Model: LP-2020A+
This Parts Express Lepai Tripath-based Class-T mini audio amplifier's small size and clean 20 watt output make it perfect for almost any auto or home audio project or DIY application where space is limited. Power supply included when purchased from Parts Express.
In Stock
List Price$34.99
Regular Price$26.88
You Save26%
Sale Price
Sale Ends12/3/2015
Part # 310-300
  • Tripath TA2020 amplifier chip provides efficient, powerful sound
  • Economical price and tremendous performer
  • Compact size makes this amplifier great for projects and DIY audio applications
  • Power supply included when purchased from Parts Express
  • Aluminum enclosure that is lightweight yet sturdy, and acts as a heat sink
  • 3.5 mm jack allows easy connection to iPods, cell phones, and all sorts of MP3 players

Product Details

Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

The leading edge of a small-amplifier revolution

This special purchase Lepai Tripath-based mini audio amplifier is ideal for both home and car audio applications. The amplifier's TA-2020 amp chip is a 20W/ch. continuous average two-channel Class-T Digital Audio Power Amplifier IC that incorporates Tripath's proprietary Digital Power Processing™ technology. Class-T amplifiers offer the audio fidelity of Class-AB designs combined with the power efficiency of Class-D amplifiers. The Lepai amp's clean, 20 watt output makes it perfect for almost any auto or home audio project or DIY application.

Get connected quickly and start listening to music

Google "Lepai LP-2020A+" and you'll find this little amp has been discussed and raved about! Each unit has an RCA Left and Right channel input, or you can use the 3.5 mm stereo input jack for plugging in almost any music source, such as iPods, cell phones, or MP3 players. Convenient spring terminals make connections to your speakers quick and easy!

Arrives ready to work, and keeps on working

The Lepai mini amplifier has an aluminum enclosure that is lightweight, yet sturdy, and acts as a heat sink to keep the amp running cool. Color may vary. Includes at minimum 12V, 2A power supply. PSU styles may vary.

Specifications: • Power output: 2 x 20 watts RMS • Input impedance: 47k ohms • Frequency response: 20 Hz - 20 kHz • Input sensitivity: 200 mV • Minimum THD: <0.05% • Dimensions: 4.72" D x 5.79" W x 1.65" H.

Power Supply Specifications: • Input: 100~240 VAC, 50-60 Hz • Output: 12 VDC, 2A (minimum) • 2.1 x 5.5 plug.

Product Specifications
  • Special FeaturesClass T
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply
  • BrandLepai
  • ModelLP-2020A+
  • Part Number310-300
  • UPC844632088353
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (320 Reviews)
  • Weight1 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 Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply
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Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply is rated 4.4563 out of 5 by 320.
Rated 5 out of 5 by from awesomeI have 5 of these.they are incredible.for size and sound nothing even comes close.I pushed a pair of 3way 10 inch pioneer speakers and was amazed.the best!
Date published: 2015-11-10
Rated 5 out of 5 by from Amazing little compact amplifier!I hooked this Lepai LP2020A+ up to a pair of KLH 5 1/4 in. 2 way speakers I've had for about 20 years so I can have some tunes in my basement workout room. I use this setup for about an hour or so every day (well not every day, but most days) and get decent sound quality with plenty of volume turned up less than half way. A little higher for the treadmill. I only bought this a few weeks ago, but no complaints so far. Very satisfied. Thanks for the quick shipping guys, I was starting to get flabby.
Date published: 2015-10-18
Rated 5 out of 5 by from Super little T ampI needed a small amp to test some bookshelf speakers I was building. The Lepai LP-2020A was my introduction to class T amplification. Well, I was surprised by this amp, good controls, good sound, quiet... But I replaced the 2A 12VDC power supply with a 3A unit for better low end support. For bookshelf application this is a great solution. So I gave those bookshelf speakers and the Lepai LP-2020A to my brother for his work shop and he is very happy!! I ordered another one..
Date published: 2015-10-04
Rated 5 out of 5 by from mini amplifierUsed this mini amp for instrument mic stand monitor for flute.. sounds fine.
Date published: 2015-09-29
Rated 4 out of 5 by from works goodamp works good. size is great, small and lightweight. very impressed thus far.not the cleanest of power, especially at the higher end of it's spectrum, but is cleaner than i expected. knob is sticky, and you can definitely tell this is made in china with a lot of plastic. the blue light around volume knob is cool, except when trying to attenuate the level it is hard to see the small indicator dot. i used whiteout to remedy this, if change mind can scratch off with a fingernail
Date published: 2015-09-27
Rated 5 out of 5 by from Excellent little T-AmpI purchased a Lepai - LP-2020A+ T-Amp for using on my PC & other audio devices outdoors. First off, the little T-Amp sounds excellent powering all the speakers I have tried on it. I have tried 2, 4, 6, & 8 ohm speakers at sizes from 3 1/2", 5 1/4", 6 1/2", 8", 10", & 12" 2-way & 3-way designs with no problem powering them. If you have efficient speakers with high sensitivity of 90dB or higher this T-Amp will get pretty loud. I experienced excellent bass & treble with this T-Amp & the tone control adjustment knobs & volume knob are very smooth operating. Mine came with a 3-amp power supply instead of the 2-amp power supplies that I seen come with these T-Amps before. I bought a 5-amp power supply for mine & it makes a big difference in sound quality, it is well worth the extra cost! The 3-amp power supply doesn't provide anuff power for 40 watts to fully power this T-Amp & It is a good idea to always have more power than what you need for a little bit of over head. This is important if you plan on powering 2 or 4 ohm speakers because lower ohm speakers draw more current than higher ohm speakers. But in reality if you are only going to use low power speakers like the Dayton Audio - B652 6 1/2" 2-way bookshelf speakers or some thing pretty equal to them, the 3-amp power supply should work just fine for you with no problems. I would recommend the Lepai - LP-2020A+ T-Amp to anyone & everyone that wants a solid T-Amp for outdoor or indoor use. You just can't go wrong with the price & quality sound this T-Amp will provide. What are you waiting for? Buy one & you will be pleased with your purchase. You just can't beat Parts Express & there excellent products they provide.
Date published: 2015-09-10
  • 2015-11-30T06:22CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_320
  • loc_en_US, sid_310-300, 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  for a prompt reply.
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

Do you have any input on using this amp with this battery holder? I saw you recommended a different lead-acid battery in a previous question and was curious how it might compare.

Asked by: Skibum

1.Will this be ok with the Overnight Sensations with the 3 watt power supply? 2. Will it be OK with a pre-amp for a turntable?

Asked by: Breadfan
I assume you mean 3 amp power supply. Yes they will work fine, as will the amp with a phono preamp.
Answered by: MattP
Date published: 2015-11-23

do you have any specific info on the tone controls, ie what's the crossover frequency, if you will?

Asked by: _Paul_
Unfortunately we do not have specific details regarding the center frequency for the tone controls on this amplifier. Generally tone controls will be centered at 100 and 10kHz and be +/- 10 dB.
Answered by: MattP
Date published: 2015-11-23

My Lepai LP-2020A+ got fried in a power outage. Is there anything you can do for me?

Asked by: lillod

Is a powered sub possible ?

Asked by: abc380

Does anyone have recommendations for what gauge wire I should use when hooking up to the amp? I'm a college student working on a small project for an advising seminar and don't have much time to get this right

Asked by: nolimit21
14 gauge wire will work well.
Answered by: MattW
Date published: 2015-11-17
  • 2015-11-30T07:09CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_173
  • loc_en_US, sid_310-300, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational


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