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.
  • 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 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 (D x W x H): 120 x 147 x 42 mm.

Power Supply Specifications: • Input: 100~240 VAC, 50-60 Hz • Output: 13.5 VDC, 3A • Model: BK-40W-13.5Us1 130905.

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

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)20 Watts
  • Frequency Response20 - 20,000 Hz
  • THD<0.05%
  • Channels2
  • Speaker Outputs1 Pair
  • Speaker ConnectorsSpring Terminals
  • Number Of Inputs2
  • Input TypesRCA Jacks,3.5mm
  • Special FeaturesClass T
  • Dimensions (H x W x D)42 x 147 x 120 mm
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
    (273 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
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 4.4322 out of 5 by 273.
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
Rated 5 out of 5 by from Great Lil ampThis is an excellent product for the price, I bought to use with the MTX 5i bookshelf speakers and am EXTREMELY PLEASED. It is plenty loud for a small room and the bass and treble controls work fine.
Date published: 2014-06-20
Rated 5 out of 5 by from Great soundI installed this behind an outdoor TV, under a covered deck, customer had installed speakers in ceiling but had no idea how drive them. Took TV out into amp, what a sound. 1/8 inch jack taken by teens for tunes by the pool. Great sound at a great price.
Date published: 2014-06-20
Rated 5 out of 5 by from great ampBought for the garage system. This little amp rocks. Pair this with some nice bookshelf speakers and you will not be disappointed. Will buy another for the upstairs MAC.
Date published: 2014-06-19
Rated 5 out of 5 by from WOWI have this plugged into my two 12" fisher towers and I use my phone to play music.Unbelievable the sound that comes out of that little 20 watt amp.
Date published: 2014-06-08
Rated 2 out of 5 by from Sounds great at low volume then huge distortionAfter reading reviews for this amp I was excited to get one, bought 8 actually.They really do sound great until the distortion hits. Anything over 1/2way on the volume knob and it sounds like absolute garbage. Not even close to listenable.I'd say you're getting 6-10w/channel before the distortion makes it unusable.Why even bother allowing the knob to go that high? Rate it at 10 amps with no distortion and everyone would be happy.Certainly will not buy another.Yes all 8 sound identical and distort at the same spot, tested with many power supplies, speakers, even a 12vdc battery.
Date published: 2014-05-28

Product Q&A

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who own this product or have experience with it.
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Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

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

How can I power this from my car's 12v outlet?

Asked by: Not Bill
You will need a 2.1mm x 5.5mm DC power cord with a cigarette lighter on the end. We do not have one pre made but you can solder a cigarette lighter to the end of the DC plug wire we have available below.http://www.parts-express.com/21mm-x-55mm-x-112mm-dc-plug-with-6-ft-cord--090-489http://www.parts-express.com/marine-grade-locking-cigarette-lighter-plug-12-vdc--265-272
Answered by: MattP
Date published: 2014-08-11

How do you select the input? I  have both a turntable and my phone connected. Will it decect audio source automatically? Or would I just unplug my phone when I want to use the turntable, and plug back in when I want to use it (leaving the phono alone)

Asked by: ahajnos
Don't use both inputs at once.  Either use the mini jack or the RCA inputs.  I read that these jacks are simply wired in parallel so you will be backfeeding the signal from your phone to your turntable and from your turntable to your phone. Not good. You would need an external selector box to switch between the two sources if you want to leave them plugged in all the time. 
Answered by: engineerD
Date published: 2014-08-08

hi, can i hook up my yamaha ns10 m speakers to lepai- lp2020A+?

Asked by: Lito
Yes this will power NS10 speakers without a problem.
Answered by: MattP
Date published: 2014-07-15

I have a New Samsung digital smart TV  , can I use this to connect to 4 ceiling speakers. Has any one tried it?  I don't want anything chunky or expensive, will this amp do the trick?

Asked by: Basile
This amp will work as long as your TV has red and white analog outputs. If it only has digital outputs you will need a digital to analog converter between the TV and amplifier.
Answered by: MattP
Date published: 2014-07-18

I am having issues with my phone freezing when plugged in and listening to music. My boyfriends phone does the same thing. We've double checked wiring and everything looks good but we can't solve this problem. 

Asked by: AmyD
Please contact our tech support for more help with this issue, 800-338-0531 x1 or tech@parts-express.com
Answered by: MattP
Date published: 2014-05-22


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