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

Brand:| Model: LP-2020A+
Product Video
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.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
  • 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 for easy connection to iPods, cell phones, and all sorts of MP3 players
Part # 
Weight: 1 lbs.  
List Price$34.99
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Your Price
Buy 4-23 $25.50
Buy 24-up$23.80
Part # 310-300
Qty:  EA
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Product Details

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

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 amps combined with the power efficiency of Class-D amplifiers. The Lepai amp's clean, 20 watt output makes it perfect for most any auto or home audio project or DIY application.

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! 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.

c|net Best Tech Under $50 - February 14, 2014

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
    (298 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
in the Home Audio Amplifiers product category.


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 4.443 out of 5 by 298.
Rated 5 out of 5 by from great ampGreat clean sounding powerful amp! Very fast shipping, and quality service.
Date published: 2015-03-21
Rated 5 out of 5 by from Fantastic item. LePai amp...Over and above my expectations on my item. Shipping was faster then expected as well. I am very Happy.
Date published: 2015-03-06
Rated 5 out of 5 by from Quite GoodFor a 20$ amp it is fantastic, far exceeding my expectations!!! Some wanted a little amp to hide behind my TV to drive some Polk omw3 speakers, anything to sound better than those terrible things they call speakers on LCD/Plasma TV's. So it seems to put out a really good 5 watts per channel with the supplied 12v 3a power supply. " That's what came with mine" I will say that the tone controls kinda ruin the sound. Causes the midrange to become real thin bass gets muddy and highs way to bright. With tone controls off. Sounds great, maybe slightly, bright but its a very enjoyable bright. I was impressed enough to plug my martin Logan motion 12's and Denon DVD player into it and listen to some Eric Clapton unplugged. My jaw hit the floor not expecting to hear what I did... there was a decent amount of bass, not real controlled but pleasingly full. On to the midrange, very smooth and open but just a tad relaxed and surprisingly a Simi deep soundstage.. now to the highs, there are some artifacts apparent but still the highs are great. Overall the tonal balance of this thing is real good. Its not super clean but still really enjoyable but after all it is a 20$ amp and shouldn't be overly scrutinize on its sonic ability, but the fact that you can is astonishing for 20$. I will be modifying this guy for sure.. at least double the power capacitance with a eley or nichicon cap somewhere around 6.8-10uf should suffice, bypassing the tone controls for sure cause it doesn't need them, and replacing those junk output inductors with some Jantzen air core's. Mods should clean up some of the artifacts open up the soundstage a little and speed up/clean up that bottom end and drive with more authority... if you want something to play around with or maybe a good amp for computer or simply what I did add a more enjoyable sound to a TV, just buy it..you will not regret
Date published: 2015-02-28
Rated 5 out of 5 by from Lepai LP-2020A+ Class T AmpI bought this little amp a couple weeks ago to improve the sound of music coming out of my laptop. I used this with a pair of older bookshelf speakers. The set up sounds terrific. Amp has way more volume available than I will ever need. No "muddy" sound...... everything is crisp and distinct. Box came VERY carefully packed. My brother has been doing business with these guys for years; this was my first time. But hey, with products like this, free shipping, and a very liberal return policy..... what's not to like?
Date published: 2015-02-24
Rated 5 out of 5 by from Compact design and perfect for my 19 inch TV.Have been using this amp for a couple of weeks now to power two 3 inch midrange speakers circumventing the TERRIBLE speakers in my 19 inch TV. Could not be more satisfied.
Date published: 2015-02-22
Rated 5 out of 5 by from great valueI use the amp in my office at a university. So I really can't crank up the volume without disturbing others. I'm using BIC indoor/outdoor speakers with it. The amp does everything I wanted it to. So if you don't want to play music loud, this is great value.
Date published: 2015-02-21
  • 2015-03-28T07:11CST
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Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

What 4" speakers that you sell would work best with this amp?

Asked by: helislider

What might be the easiest/cheapest way to add FM radio tuning capabilities to this little gem?  All opinions are welcome. Thanks!

Asked by: SeanMcCauley

Will this power a pair of Sony ss-b1000 speakers or do I need more power. This is for a bedroom TV / mp3 player were high volume is not always needed.  

Asked by: ibabox

With two inputs (the headphone style and the RCA style), how does the device switch between them?

Asked by: WorldHQ
The amp was designed for one input to be used at a time. There is not input selector.
Answered by: TomI
Date published: 2015-03-16

Can I hook this up to headphone out on a boom box to power some external speakers? Thanks

Asked by: Jack Z
Answered by: MattP
Date published: 2015-03-05

What power supply is this amp currently shipping with? Is it a 12VDC 2A...? Or are they now shipping with a higher amp rating PSU? Thank you!

Asked by: tylerdurden
I bought one of them from amazon and it shipped, factory boxed with a 3 amp PS.  It works very well, same as the 5 amp one i purchased previously.  
Answered by: laikom
Date published: 2015-03-13
  • 2015-03-28T07:04CST
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