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Lepy LP-2020 Class-D Hi-Fi Audio Amplifier with Power Supply

by Lepai
4.5 out of 5 stars 269 customer reviews
| 14 answered questions

List Price: CDN$ 38.49
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LP-2020A+
  • Compact size makes this amplifier great for projects and DIY audio applications
  • 3.5 mm jack allows for easy connection to iPods, cell phones, and all sorts of mp3 players
  • Aluminum enclosure that is lightweight, yet sturdy, and acts as a heat sink
  • Tripath TA2020 amplifier chip provides efficient, powerful sound
  • Economical price and tremendous performer
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Frequently Bought Together

  • Lepy LP-2020 Class-D Hi-Fi Audio Amplifier with Power Supply
  • +
  • RCA AH1650SN 50 Feet 16-Gauge Speaker Wire
  • +
  • Pioneer SP-BS22-LR Andrew Jones Designed Bookshelf Loudspeakers
Total price: CDN$ 185.94
Buy the selected items together

Product Details

Color Name: LP-2020A+
  • Product Dimensions: 11.9 x 14.7 x 4.3 cm ; 454 g
  • Shipping Weight: 499 g
  • Item model number: LP-2020A+
  • ASIN: B0049P6OTI
  • Date first available at Amazon.ca: Feb. 16 2012
  • Average Customer Review: 4.5 out of 5 stars 269 customer reviews
  • Amazon Bestsellers Rank: #1,614 in Electronics (See Top 100 in Electronics)
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Product Description

Color Name:LP-2020A+

Product Description

This Lepai Tripath-based audio amplifier is ideal for both home and car audio applications. Its small size and clean 20 watt output makes it perfect for most any auto or home audio project or DIY application where space is limited.

From the Manufacturer

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 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-Percent Dimensions (D x W x H): 120 x 147 x 42 mm.

Customer Reviews

Top Customer Reviews

By Andy TOP 500 REVIEWER on Nov. 25 2013
Color: LP-2020A+ Verified Purchase
I'm driving a pair of Sony SS-B3000s with this little amp and I'm very happy with the results. Tests around the internet show that the amp maintains very good levels of harmonic distortion up to about the 5-10 watt per channel range (this improves quite a bit with 4 ohm speakers), so don't expect high fidelity with this thing cranked. But for home listening at relatively low power, it's sounds fantastic. And for $20, you can't knock it. The bass is solid, treble is clear, mids are strong.

On a side note, when talking about sound, 5-10 watts is quite a lot. Perceived volume is a logarithmic function of power. Almost no home system had over 10 watts of usable volume until the 80s and it often came along with a loss of fidelity at lower volumes. Especially when it got ridiculous in the 90s with 500 watt home systems. The funny thing was that people still didn't use more than about 5 watts, even with their music "loud". And most home systems still sound terrible at full volume.

I'd put this up against most home receivers from the 90s in a heartbeat for fidelity in the first 7 or 8 watts, which is all I ever use. It's just unbelievable for its price and size.
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Color: LP-2020A+ Verified Purchase
Length: 9:47 Mins
O.K. it's not a pioneer or other big name receiver/amp. This little box can still punch out the sound. Not meant to drive 100watt speakers so get a cheap pair. I am using it to driver a couple of out door patio speakers and it does great. Wish I was aware of this little amp. when the sound card went on my Dell T.V. (Please never buy a Dell T.V. they suck). The sound is clear and the BASS and TREBLE are moderate but give the music a little punch and adds a little tweek for the highs too. Worth the 20 to 30 bucks. The inputs on the back are nice whether you go with the RCA or the 1/8 jack it's all good. Click "Yes" if this review was helpful. Thanks
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Color: LP-2020A+ Verified Purchase
I liked the first LP-2020A+ I ordered so much I bought a second one. Very versatile, musical little amp, and just one of those cool pieces of gear that you love to show off. I have replacement 12v adapters for both of my amps (intended for computer monitors) and would recommend (like everyone else does) replacing the stock 12v adapter with a 12v 5 amp adapter. This LP-2020A+ is hooked up to my spare turntable through a phono preamp and running into various bookshelf speakers - it seems to like an 8 ohm load with a minimum of a 6" driver best - it pounds a 4 ohm set with 5" drivers a little too hard. As other reviewers have said the build quality of this unit is very high, it is aesthetically pleasing save for the super bright blue LEDs in the volume surround, and it punches well above its weight class as an amplifier. I appreciate its compact size, portability, and the fact that it will work with almost any speaker load from 2 to 16 ohms.
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Color: LP-2020A+ Verified Purchase
The product works well for it's price, However, at loud volumes it has a humming noise, so just make sure you don't turn it up too much.
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Color: LP-2020A+ Verified Purchase
I hooked up this mini amp to two satellite speakers (Energy Take Classic). The input was either from a karaoke machine or from a wireless microphone. Also tested with output from my laptop. The sound is amazingly great for a mini amp. The MP3 (3.5 mm stereo) input is very convenient to hook up laptops or other portable audio devices. The Direct/Tone control is also very useful (though I use the Direct mode predominantly). The blue LED lighting around the volume control knob is pleasing to the eyes. Overall, I am happy with the purchase.
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Color: LP-2020A+ Verified Purchase
I made a surround system with 3 of these and second hand speakers. Because so much signal processing can be done by onboard sound cards and apps, you really only need something to make it louder. Not much base to speak of, but this is by design as I live in an apt. One in the kitchen too installed under the cupboards with 2 nice speakers and a little ledge to hold tablets, players, etc. Always buy the model that includes a power supply as finding 12v 8amp converters is next to impossible and pricey. If you like it loud, cut a hole in the housing and use an old video card heat sink on the main amp chip, sounds better, less smoke.(tip: buy speakers at second hand stores, say someone blows the amp on his $400 surround sound, the orphaned speakers are often found at charity stores, etc, I have some nice Sony ones that sound like money someone else spent, a sweet and lovely tune indeed!)
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Color: LP-2020A+ Verified Purchase
I've had the Lepai 20W stereo amp for a few weeks. I'm using it with the provided power adaptor (110V mains to 12V @ 2A) which is a small, light SMPS unit that plugs into the wall. You also have the option to connect a 12V battery power supply if you want something portable for travelling, camping, picnics, a busking amp, etc. A rechargeable 12 sealed lead acid (SLA) battery (burglar alarm/emergency lighting battery) would be ideal but remember that you can't take SLA batteries on planes or through security checks.

I have it plugged into a pair of small, low quality bookshelf loudspeakers so I can't really comment on the sound quality. The tone controls (bass and treble) make a noticeable difference and I think have a sufficient range for what you'd expect from a small cheap amp, plus there's a bypass switch. The case and controls have solid construction and I think the unit would survive a few knocks and drops - important if you intend to travel with it or use it for busking. I haven't tested it but I expect the 2A power supply is easily enough to get a full 20W out of the amp without distortion or losing bass response, however, that doesn't mean it wouldn't overheat if played at full volume for long periods of time. It's easily serviceable but, for the price, it's probably cheaper and easier to buy a new one if anything goes wrong with it.

Overall, I'd say it's a bargain at the price, robust and flexible, a decent quality... ...and no, I wasn't paid to write this review! I genuinely like it.
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