Qty:1
Add to Cart
or
Sign in to turn on 1-Click ordering.

More Buying Choices
Add to Cart
$18.09
& FREE Shipping on orders over $35.00. Details
Sold by: Amazon.com
Add to Cart
$18.40
& FREE Shipping on orders over $35.00. Details
Sold by: EpicVideo
Add to Cart
$18.40
& FREE Shipping on orders over $35.00. Details
Sold by: WickedSpec
Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
Color:
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

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

by Lepai
| 256 answered questions

List Price: $34.99
Price: $18.64 & FREE Shipping on orders over $35. Details
You Save: $16.35 (47%)
In Stock.
Sold by VegasWind and Fulfilled by Amazon. Gift-wrap available.
Want it tomorrow, April 17? Order within and choose One-Day Shipping at checkout. Details
  • This special purchase Lepai Tripath-based mini audio amplifier is ideal for both home and car audio applications.
  • The TA2020 is a 20W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC using Tripath's proprietary technology.
38 new from $14.55 4 used from $50.00 1 refurbished from $16.99

Audio & Video Accessories Store
Find savings on everything you need to enhance your audio experience in the Audio & Video Accessories Store. We carry top-rated HDMI cables, universal remotes, HDTV antennas, back-up power units, rechargeable batteries, surge protectors and much more. Shop now.

Frequently Bought Together

LP-2020A+ Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply + AmazonBasics 16-gauge Speaker Wire - 100 Feet
Price for both: $28.07

Buy the selected items together


Product Specifications

Brand NameLepai
Output Wattage20
Color NameBlack

Technical Details

  • Brand Name: Lepai
  • Model: LP-2020A+
  • Output Wattage: 20
  • Surround Sound Channel Configuration: 2
  • Color Name: Black

Product Details

  • Product Dimensions: 4.7 x 5.8 x 1.7 inches ; 1 pounds
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B0049P6OTI
  • Item model number: LP-2020A+
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (1,768 customer reviews)
  • Amazon Best Sellers Rank: #141 in Electronics (See Top 100 in Electronics)
  • Date first available at Amazon.com: October 28, 2010

Product Description

This Lepai Tripath-based mini audio amplifier is ideal for both home and car audio applications. The amplifier's TA2020 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 TA2020 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.

Customer Questions & Answers

Customer Reviews

You won't go wrong buying this amp.
Pete Malloy
If you are looking for a small power amp that is light weight, takes up very little space, and sounds really good, look no further.
Jon Norris
This works perfectly for using an old pair of bookshelf speakers with this small computer.
Robert D. Jarvis

Most Helpful Customer Reviews

79 of 83 people found the following review helpful By Correy Samper on December 27, 2013
I have been using the Lepai amp for almost 2 years. There are good and bad things that I noticed. Below is my summary of the Lepai mini amp:

The GOOD:
1) This amp is really inexpensive. If you cannot spend more than 20 bucks then you may want to take a close look at this amp.

2) The sound quality albeit at low volume is pretty decent. This amp uses the TA2020 chip set which does offer quite low distortion at low volume.

3) The amp has tone controls so you can fiddle with the sound to some degree.

The BAD:
1) You'll be hard pressed to drive a pair of low-sensitivity or 8-Ohm speakers to decent volume with this amp. With an 8 Ohm speaker, you get clean sound to around 5 Watts only. If you crank the amp up to 10 Watts you'll already hit 10% distortion. With 4 Ohm speakers you can get up to 10 Watts per speaker. In fact, the wattage rating of this amp (2 x 20 Watts rms) is truly false. The power supply that comes with this amp gives 2 Amps at 12 Volts. At a power efficiency of 90% you'll get 2 x 10 Watts rms at the most. However, if you have some fairly small speakers then you may be fine. Otherwise, spend a little more and buy another amp.

2) The enclosure of this amp is fairly bulky and not exactly high quality. I opened up the enclosure and found that most of the interior is empty. What a waste of space! Also, there are some gaps and areas where Lepai could have spent a little more attention to detail in terms of quality. The knobs are fairly basic too and tend to come loose.

3) The rear speaker connector easily snaps out of its socket and doesn't accept thicker speaker wire easily. So You'll have to stick to fairly thin speaker wire.

To summarize, if you really cannot afford more than $20 on an amp then the Lepai is a decent choice. But don't expect the amp to drive larger speakers.
6 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
84 of 95 people found the following review helpful By Martin Lange on January 8, 2014
This amplifier is shipped with a 12 Volt power supply. If you are somewhat knowledgeable then you can do the math and figure out that given the 12 Volt supply voltage this amp can deliver without an excessive amount of audio distortion:

- 2 x 18 Watts with 4 Ohm speakers, and
- 2 x 9 Watts with 8 Ohm speakers.

If you further look at the current rating of the power supply then you can figure out that in fact the maximum wattage is 2 x 10 Watts regardless of the speaker.

Some other reviewers have suggested swapping the power supply with another one that has higher current to boost the power rating. However, since the supply voltage is fixed it wouldn't help at all if you are driving 8 Ohm speakers. You are still limited to a maximum of 9 Watts. To get more wattage, you'll need to look at another amp. Below I have listed some of the more popular mini amps on Amazon. I have ordered the list according to their cost. You can see the power supply voltage of each amp and the maximum wattage when driving 8 Ohm speakers:

- Lepai LP-2020 ($17): 12 Volts - 2 * 9 Watts @ 8 Ohms
- Amphony 200 ($69): 36 Volts - 2 * 20 Watts or 1 * 80 Watts @ 8 Ohms
- Topping TP20-MK2 ($70): 14 Volts - 2 * 12 Watts @ 8 Ohms
- Dayton Audio DTA-100a ($96): 24 Volts - 2 * 30 Watts @ 8 Ohms

I hope my review will help in your amplifier selection.
7 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
474 of 594 people found the following review helpful By Jon Norris TOP 500 REVIEWERVINE VOICE on January 15, 2011
Verified Purchase
This is a sweet little stereo amp based on T-amp chip technology. It is clean and powerful for its size. It comes with a wall wart power supply, but could also be battery powered if one desired. There are input connections in stereo RCA jacks and a 1/8 inch (3.5mm) stereo plug for mp3 players, CD players, video players, etc.

There is an actual power switch instead of a pot-based switch as on similar models previously offered by Sonic. There are also Bass and Treble controls, which can be quite handy in tailoring the sound a bit to the speakers and space.

I am using these for small PA applications and for desktop computer sound. I have plans to create a small guitar amp setup as well. I have used 6 of these in my "day job" and was so impressed I started buying them for home.

I have driven spot monitors like Carvin PM5-Bs and even JBL 10 inch 3-way studio monitors with these and similar amps, and they work very well, especially for small areas. One of these and a pair of Carvin monitors make for some pretty great desktop computer sound. (Until your cubicle neighbors complain, anyway.)

I haven't done any actual power measurements, but they are claimed to put out 20-25 watts per channel into 4 ohms, and my ears agree that those figures are probably accurate. I have only run them at 8 ohms, and have been pleased with the sound. I currently use one of these and JBL 10 inch 3-way studio monitors to provide computer sound for a 42 person classroom, and the sound is pretty amazing for a $20 dollar amp.

If you are looking for a small power amp that is light weight, takes up very little space, and sounds really good, look no further. Give these a try, I think you'll be impressed, too.

Oh, Parts Express is also great to do business with.
Read more ›
187 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
96 of 118 people found the following review helpful By B. Roy VINE VOICE on March 15, 2012
Verified Purchase
This is a clean sounding amplifier with only the controls one really needs. So its great for my parents who don't have the frame of mind to fiddle with too many controls. However, be aware of power supply issues.

1) I bought two of these at different times from Amazon. Both did not ship with power supply - even though they claimed to include them. Amazon has not corrected the product description even after I told them about it.
2) The shipped power supplies were to be a 2 amp one and a 6 amp one in the second case.
3) If you run this amplifier from a 2 amp power supply - here is some news for you. The theoretical max watts your system can deliver would be 12X2 = 24 watts - However, since the amp is running around 80% efficiency - you can get approx 24X0.8 = 18 watts max from this amplifier (best case scenario) or around 9 watts per channel. The problem comes as you drive the amplifier harder. The power supply voltages will start dipping, and as it does so, the amplifier will distort. So your clean sounding amplifier, won't sound so clean after all once you drive it past 7 - 8 watts.
4) To really use this amplifier with low distortion at high volumes, you should use a switching powersupply that delivers 12 to 13.5 volts at 4 amperes. 6 amps is a bit of an overkill, but recommended if you will be using 4 ohm speakers.
5) You cannot use this amplifer with an un-regulated transformer type powersupply rated at 12 volt. Their no-load voltage can be anywhere from 15 - 20 volt and can even be dangerous if connected to this amp - since the supply capacitor is rated at 16 volt.
6) Don't forget the log relationship between perceived loudness and watts - a 100 watt amplifier is only double the loudness of a 10 watt amplifier.
Read more ›
11 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews

Search
ARRAY(0xa01c345c)