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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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 12V, 2A power supply.

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 • 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
    (278 Reviews)
  • Weight1 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains 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 4.4317 out of 5 by 278.
Rated 4 out of 5 by from Loud and cleanPurchased this along with a pair of fullrange drivers to construct a simple bedroom sound system for my son. Unit is amazingly light and produces clean audio with surprising tonality. Simply outstanding for such a low price. Highly recommended.
Date published: 2014-09-16
Rated 4 out of 5 by from Not an amplifier to be taken seriously.I just bought this amp. It is a Low - Power amp. That being realized, I'm not sure about the 20 watts per channel, both driven at the same time, maybe one channel at 20 watts per side may seem correct. Seems to break up quite easily. Nice package. May be great for small Ipods to sound a little better then what you have. DO NOT expect miracles from this thing.
Date published: 2014-09-01
Rated 5 out of 5 by from nearly indestructableI have been using these amps for over a year and none of the more than a dozen has failed me. I've abused these little gems in ways you cannot imagine. I've short circuited the outputs accidentally, countless times, I've over-driven them and the protection circuit never fails to function, I have listened for a half hour at 100 db plus driving a 2.6 ohm load with barely perceptible distortion at 105 db peaks. They remain cool to the touch even after this abuse. Yes there are better amps but they all cost considerably more; 10 to 100 times more, and even people with little Hi-Fi experience can't damage them without drop-kicking them. They do sound very good under most reasonable loads. I will never be without them. They are perfect for serious testing and most of all critical listening to many different loudspeakers. And best of all they are nearly indestructible
Date published: 2014-08-28
Rated 4 out of 5 by from Good Value for the MoneyWorks Well, Sounds Good. Louder than I predicted it would be. Removed aluminum case and installed directly into speaker box, soldering connections directly to Amp Board for Power, Ground, Audio inputs and outputs.Used with a pair of HiVi BN3 3 ich speakers.http://www.parts-express.com/hivi-b3n-3-aluminum-driver-round-frame--297-428Sound quality Exceeded my expectations.
Date published: 2014-08-26
Rated 5 out of 5 by from amp reviewgreat looking amp. Works great with t.v.in spare bedroom making volume loud enough to hear over exercise equipment.
Date published: 2014-08-25
Rated 5 out of 5 by from How do they do it?I purchased this amplifier along with the Dayton B652 speakers for use as computer monitors when recording/editing audio. I really did not expect much as this amplifier is silly inexpensive. However, I was shocked to hear how clean and clear the audio was. The dynamics felt unrestricted and easy. The frequency response seemed smooth and full. This is my first foray into the world of T-amps and I have to say I am sold!To be clear, I do not run this amplifier at anything past about 10:00 on the dial (since I use them in a near field capacity), so there is zero discernible audio distortion at that level. And I love the fact that they included treble/bass boost/cut controls. With the speakers on my desk and near a back wall, there is some boominess to the bass, however the Lepai amp allows me to cut the bass slightly to remove the boominess and still allow a full sounding bass; very nice!
Date published: 2014-07-15

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

Hello,  I have one of these units with a bad spring clip. Do you sell any replacement parts ?  Also I see other sites list a new improved 2014 model. What are the upgrades ?  Thanks Bob

Asked by: sonicbob
The 4 position spring loaded wire terminal block is part # 260-305
Answered by: TomI
Date published: 2014-10-09

Would it be possible to connect a 12V battery pack to the amplifier instead of the wall power supply to make the amplifier portable?

Asked by: riman123
Yes. The Lepai amplifier will draw up to 3 amps at 13vdc. A 12vdc battery at 3aH would last approximately one hour.
Answered by: TomI
Date published: 2014-09-30

Can you Use The Lepai 2020a Amplifier In Bridege Mode ? I Know It's Not Stated In The Manual But Would Like To Know If Its Possible To Get The Power Of Both Channels In 1 By Using Both Positive Terminals On The Amp ..

Asked by: Jose14
These amplifiers cannot be bridged.
Answered by: MattP
Date published: 2014-09-22

I just received my Lepai 2020A+ amp.  (Order #1999688)  I hooked it up to determine that it was working properly before I installed it in a complex physical position (didn't want to take it out again) and discovered that it cut out as I turned it up.

Asked by: woodman37909
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-09-05

I am considering using this for a small start on a build for golfcart. Should I use a Sealed Lead Acid battery or just use the golf cart's battery? Thanks.

Asked by: Hofe
These are very efficient amps and will not offer much of a load on the golf cart batteries. As long as they are 12 volt this should be perfectly fine.
Answered by: MattP
Date published: 2014-09-02

What is barrel size for power supply? 2.5x5.5

Asked by: adipic9
The DC plug input on this amplifier is 2.1mm x 5.5mm, but a 2.5mm will work most of the time.
Answered by: MattP
Date published: 2014-08-12


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