Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier without 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 not included.
  • 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
  • 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: 0.75 lbs.  
List Price$29.99
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Your Price
Buy 2-11 $22.50
Buy 12-up$19.80
Part # 310-301
Qty:  EA
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Product Details

Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier without 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.

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% • Required power supply (not included): 12 VDC 2A (2.5 mm x 5.5 mm plug, center positive) • Dimensions (D x W x H): 120 x 147 x 42 mm.

Product Specifications
  • Special FeaturesClass T
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier without Power Supply
  • BrandLepai
  • ModelLP-2020A+
  • Part Number310-301
  • UPC848864000770
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (13 Reviews)
  • Weight0.75 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 without Power Supply
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Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier without Power Supply
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier without Power Supply is rated 4.3846 out of 5 by 13.
Rated 5 out of 5 by from More than I hoped for.I am an audiophile who fell on hard times and then my amp blew. I had $25 to spend and decided on this little beauty. I'm running a pair of hand built TMM 5" speakers that are about mid efficiency (85-87db, hard to say as the drivers were hand made). This little amp pushes them just fine. Can I shake the windows without distortion? Not anymore, but what do you expect for $20. My speakers are built to have super controlled bass rather than lots of it so I can hear a "muddiness" in the lows but, again, $20. On the down side I think the glowing volume knob is trashy and I would have paid another $2 for a headphone jack. This company makes an $11 version that I plan to incorporate into some computer speakers. Looking forward to see what $11 sounds like.
Date published: 2014-07-02
Rated 3 out of 5 by from If you need some tiny speakers, this is an amp.I just got the Lepai LP-2020A+ to boost the sound from my iPhone into some speakers mounted in the headrest of my recliner. As long as you don't turn up the volume on some combination of the source or the amp too much, it works. Crank it too much and the sound cuts out. Can't get excited about the performance. It's a 20 watt amp. Perhaps I need better speakers, or as another poster suggested, a better power supply.A real improvement would be more universal connections. The outputs are the type that clamp down on bare wire. (Whatever that's called) Who wants to strip wire, or depend on stripped wires? A 3.5mm output, like the input, would be perfect. Even RCA outputs would be a huge improvement. An even better improvement would be to have those connections on the front of the body.Anyway, it works. Far from perfect, but it works.
Date published: 2014-05-07
Rated 5 out of 5 by from Nice AmpI put this amp in an ammo can mp3 dock project. Works great, no problems.
Date published: 2014-03-28
Rated 5 out of 5 by from Great productMy intention was to get better sound when listening to music on my pc.After listening to several computer speakers I just couldn't find any that impressed me so I decided to put together my own system. I followed the advise of another reviewer and bought this amp and the 12v 5a power supply separately. I paired this set up with a pair of Dayton Audio B652's and I am blown away.....
Date published: 2014-02-24
Rated 5 out of 5 by from Lepai LP-2020A+This little amp is driving four large Klipsch speakers (configured to present an 8 ohm load) in a medium room to moderate levels and have an efficiency rating of 102db.  I have been involved in audio for many years and consider myself an audiophile. I can tell you the sound  produced by the LP-2020A+ is nothing less than spectacular IMO, I am getting plenty of volume to sensible levels without clipping. However you will not be able to attain this volume if your driving a difficult load and would recommend efficient speakers that are rated at 8 ohms. In this regard this amp will give the big boys a run for their money up to a certain level. So this IMO makes the LP-2020A the greatest bargain on the internet. 
Date published: 2014-01-21
Rated 5 out of 5 by from WOWA couple of weeks ago I fixed my old SPL Speakers using 4 GRS 8PR-8 8" Poly Cone Rubber Surround Woofer running then with a 2 watt per channel muti media set up for my computer and that sounded good but just added the Lepai 2020A amp without the power supply…all I can say is WOW... bought the 5A power supply for $16.00…and this thing cranks out the SLP volumes….get this little work horse you will not be disappointed....this amp sounds great to me but the next door neighbor not so much...LOL
Date published: 2013-10-11

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 without Power Supply

I am building a portable boom box.  Could I install two of these.  One that drives the subwoofer and one that drives a midrange and tweeter combo via a crossover?

Asked by: pauld
Yes these would work for an application like this.
Answered by: MattP
Date published: 2014-10-08

Will this amp do ok running a pair of 3 ohm Kenwood 6X9's while running off a 7ah sealed lead-acid battery?

Asked by: SonicXtasy
I am sorry, this amplifier is only rated to drive loads of 4 ohms or higher. A 3 ohm load may cause damage.
Answered by: Chrisf
Date published: 2014-08-06

Hi There, in the rear I have 2 x 6" x 9" Pioneer 240W Max 40W nominal 4 Ohm Impedance speakers and two smaller speakers in the front of the car. is this powerful enough to power this system? otherwise is there a better alternative? Cheers Stephen

Asked by: Stephen11111
This amplifier will only safely power two 4 ohm speakers. You may want to look at the 4x45 watt Lepai which you can see below.http://www.parts-express.com/lepai-4x45w-mini-amplifier-with-remote-usb-mp3-media-card-fm--310-304
Answered by: MattP
Date published: 2014-04-18

I get no output from my 310-301 LEPAI LP-2020A+ TRIPATH CLASS-T HI-FI AUDIO MINI AMPLIFIER blue led around the volume is lit but no sound,.is there a fuse for the volume?,I hear nothing tried several speakers that work and 3 devices that work

Asked by: vici
Please contact our tech support regarding this issue. 800-338-0531 x1 or tech@parts-express.com.
Answered by: MattP
Date published: 2014-04-04

is this amp stable at 2 or 4 ohms per channel?

Asked by: shaenf
This amp is stable to 4 ohms per channel.
Answered by: MattP
Date published: 2014-03-03

If I use 3.5 mm stereo input, and hook up only one speaker will it get all of the sound or just the right or left signal?

Asked by: bvdhvy
You will only get the left or right signal out depending on which channel you plug the speaker into.
Answered by: MattP
Date published: 2014-01-24

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