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
Regular Price$26.88
You Save26%
Special Price
Part # 310-300
Qty:  EA
Available Payment Methods

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
  • Power (RMS/Channel 8 ohms)0 - 25 Watts
  • Special FeaturesClass T
  • Weight Range< 10 lbs.
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply
  • BrandLepai
  • ModelLP-2020A+
  • Part Number310-300
  • UPC844632088353
  • Product CategoryAmplifiers
  • Unit of MeasureEA
  • Product Rating
    (255 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 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 4.4392 out of 5 by 255.
Rated 5 out of 5 by from Nice smal size.My flatsreen TVs sound not good enough to enjoy music & movies. Too tinny. This little unit, coupled with a nice set of indoor/out door speakers purchased @ the same time really fit the bill.
Date published: 2014-04-16
Rated 5 out of 5 by from Really, it is simple!I had a dinosaur Sony receiver that had given up when a client suggested this little piece of technology for my hair salon. I could not believe it would work the same but it did!I plugged in my speakers and satellite radio then flipped the switch. It could not have been more simple! Sounds great.
Date published: 2014-04-16
Rated 1 out of 5 by from An Oscillating WeaklingMeasured power into 8 Ohms at 1kHz. was L- 5.56 Watts at 2%THD, R- 6.5 Watts at 2%THD both channels operating. Power single channel 5.528 Watts at 1%THD each channel. This amplifier has no where near 20 Watts RMS power and at clipping it oscillates at high frequency.
Date published: 2014-04-16
Rated 5 out of 5 by from Nice little amp!I picked this up to use with a pair of Boston Acoustic HD-7s that a neighbor had put out on the curb (one woofer needs a new foam surround). I'm using the system on my non HD, non 5.1 big ol' CRT TV. :) It can get much louder than I need and has a nice clear tone through the HD-7s.
Date published: 2014-04-15
Rated 5 out of 5 by from Little PowerhouseBought with no experience with small amplifiers but was blown away with the power from such a small package. This small amp hookup to my Polk Audio Series 4 monitors sound great.
Date published: 2014-04-15
Rated 5 out of 5 by from High quality Amp for penny wise people.I've been following the LP-2020A Amp on youtube and user comments. I finally bought this one on sale at Parts Express with a larger order so I could get free shipping. I am very satisfied with the Amp because it is surprising low in distortion at reasonable playback levels. My speakers are medium to high in efficiency. My Morel 8 inch speakers sounded very good with this amp and my 15 inch Eminence speakers also sounded great with this little Amp. For those wanting high level sound levels, a sub-woofer added to the system seems to beef it up. I would think that a second LP-2020A a second set of speakers would get closer to party levels. For old guys like me, It's plenty of power but it's clean power.
Date published: 2014-04-14

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

Is this a good match?

I just ordered this amp, and these speakers:Dayton Audio B652 6-1/2" 2-Way Bookshelf Speaker PairI plan on using this little system for my computer since my 7-year-old JBL Creature system died on me today. I use my computer for all my music and radio.A good match?
Asked by: DaveS
They will work well with each other, you will enjoy listening to them very much.
Answered by: mtg90
Date published: 2012-06-14

can I power this amp with a car battery ( 12V/ 7Ah ) ? would be very cool for a portable system.. :)

Asked by: schmappel
Absolutely. I'm powering it with a 12V/12Ah, and it ran for many hours pushing around 6-7V (~5W). I'm running it with a Bill Fitzmaurice Jack 10 full range cabinet. I've added the link to my youtube video showing it in action.
Answered by: SouthernHive
Date published: 2013-12-31

Can this be used with headphones

I have HPX2000 hooked to this amp with a horrid buzz. I need to keep the volume way down to keep the buzz out. Any suggestions.
Asked by: lichy
i can now report testing the series resistor setup with 8 different high quality headphones including the K340 part electrostatic phones from AKG, which are about as difficult a headphone load I have heard of.The best series resistors are 5.6 ohm wirewound. I am using Dale 1% because that is what I had available here. I tried 33 ohm wirewounds and got no output from the amp.8 ohm resistors work, too. The sound quality of this hookup is as good as I've heard, right up to row A levels (which I usually avoid, since I like my hearing as it is).If you are an audiophile, and own top grade headphones, I believe it is worth the $30 or so (Lepai amp, 2 resistors, headphone jack) and 15 min soldering time (if you are dead slow) just to hear how this rig sounds. Warning: this, with excellent phones, is absolutely totally revealing of any problems with the source material. On one recording of Mozart's Requiem (Colin Davis, BBC Symphony, recorded 1967) I could hear the soloists breathe in before entrances (this is closely miked, and a little harsh on the choral mixing). Now THAT is REVEALING!I believe this setup would work on the Dayton DTA100a, but have not had time to test. Would probably use 8 ohm series resistors for this amp, just for safety.
Answered by: Doc Jones
Date published: 2014-04-02

Can I plug this into a cigarette lighter?

Can I plug this into a cigarette lighter? If so what would be a good one to go with, I'm trying to make a portable boombox for a semi with no radio.
Asked by: bhulme
You can power the unit directly from 12 volt power - but it needs to be stable. Car batteries can go down to 10.5 volts or lower inbetween the vehicle balancing the charge. Automotive electronics are designed to handle this. Connect this amp directly to the battery with a fuse. The unit says it requires 2 Amps, however, audio peaks will require more current. Compare to other auto amps of similar output and you should research that a 10 amp fuse may be more appropriate.
Answered by: MarkAJH
Date published: 2013-12-31

Will this go between mp3 player and car head unit?

I need an amplifier between mp3 player and car receiver. MP3 player has 3 terminal headphone OUT, appx 500 mV at max volume. Head unit has 4 terminal IN (R+ R- L+ L-), needs several times higher voltage.1) Will this do the job?2) Can I power this with rechargeable 9 V batteries? (since direct connection to car 12 V will add noise). 8 or 16V?Thanks.
Asked by: palmgrower
I have been selling and installing car audio for 20 years and I have NEVER seen a car receiver that needed ANY kind of power input that wasn't a 12VDC signal and that has nothing to do with speakers. If you are trying to hook up an MP3 player, either get a head unit that has RCA or 3.5mm inputs or buy a cheap walmart adaptor that changes your MP3 signal into a radio frequency...
Answered by: kingofbass
Date published: 2013-12-31

How can I run two of these amplifiers as dual mono (one per channel)? can you give details?

Asked by: Tomas
If all you want to do is use two amps, one amp as left and one as right, just use one channel from each amp and leave the other channel on each amp unused. You don't gain anything but independent volume/tone controls, and power supplies that are less stressed under full power.Plug in your left speaker into the amp you hook up to the left channel line output into, and right speaker with the amp you use for right channel, thats all.
Answered by: mtg90
Date published: 2014-04-01


Customer Projects

If you built a project using this product, post it in the Parts Express Project Gallery.

Customer Discussions

Discussions in our TechTalk Forum that include: Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.
Parts Express Free Shipping at 98 Dollars

Get Deals
emailed to you every week.

Be the first to hear about new and exciting products,special pricing and incredible deals!

See This Week's "GET DEALS" Email
Parts Express
725 Pleasant Valley Dr.Springboro,OH45066USA

© 1996-2014 Parts Express, All Rights Reserved