Lepai 2.1 2x40W Amplifier + 1x68W Sub Output
Lepai 2.1 2x40W Amplifier + 1x68W Sub Output

Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output

Brand:| Model: LP-168HA
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Looking for a simple 2.1 amplifier? The Lepai LP-168AH offers audio power output for a pair of stereo speakers, along with a dedicated subwoofer output. Perfect for computer sound systems!
  • Perfect amplifier for computer desks
  • Stereo speaker and dedicated subwoofer amplifier
  • Rear-mounted USB charging port
  • Bass, treble, and subwoofer crossover controls
  • Stereo RCA and stereo 3.5 mm inputs
Part # 
Weight: 1.75 lbs.  
List Price$39.99
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Buy 4-up$27.82
Part # 310-308
Qty:  EA
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Product Details

Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output

Lepai's LP-168AH 2.1 amplifier is the perfect computer partner—it provides up to 40 watts of power output to stereo speakers, in combination with a second dedicated subwoofer output capable of up to 68 watts of amplifier output.

Bass, treble, and volume controls on the front of the amplifier let you adjust your music for the best possible sound from your speakers. The discrete subwoofer output is controlled separately from the stereo output, with controls for level adjustment and crossover adjustment found on the amplifier's face.

Audio source connectivity is provided via a front-mounted stereo 3.5 mm jack, or a stereo pair of RCA jacks on the rear of the amplifier. A rear-mounted USB port enables charging of devices such as smartphones and MP3 players. The wide input voltage range of 9 to 14.4 VDC allows the LP-168AH to be used in automotive or mobile applications. A 12VDC, 4A power supply is included.

Specifications: • Stereo power output: 2 x 40W max (power output dependent upon power supply) • Subwoofer power output: 1 x 68W max (power output dependent upon power supply) • Power requirements: 9 to 14.4 VDC, 5A • DC power input jack: 2.1 mm x 5.5 mm • Bass and treble control • Stable down to 2 ohms • Minimum THD: <1% • Signal-to-noise ratio: >80 dB • Frequency response: 20-20,000 Hz • Adjustable subwoofer crossover: 50-200 Hz • Dimensions (including mounting flange): 7" W x 4" L x 1-3/4" H.

Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output
  • BrandLepai
  • ModelLP-168HA
  • Part Number310-308
  • UPC844632091506
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (42 Reviews)
  • Weight1.75 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.

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Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output
Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output is rated 3.9762 out of 5 by 42.
Rated 5 out of 5 by from Works as advertisedHave only had this for about a week but it sounds great. Took a little bit of tweaking with the sub volume, x over and the Treble / Bass to get it to my liking.
Date published: 2014-08-20
Rated 2 out of 5 by from like others have said - you get what you pay forFor a 30 dollar amplifier this thing does surprisingly well. But you won't confuse this with something costing more money.My unit also has the subwoofer outputs that rumble like mad. Not sure if this is a DC offset problem or something else. I might crack it open to see if there are any adjustments inside. At this point the sub outputs seem unusable. Also the subwoofer controls are completely separate, so any volume changes would need to be done on the input signal, not at the amp volume control, or you'll have to change both the main and sub output levels.The product manual in the box is 100% in Chinese, which isn't a problem in itself. The problem comes when the manual linked from the product page really doesn't describe this unit.
Date published: 2014-06-17
Rated 2 out of 5 by from Subwoofer Amp Makes A Rumbling SoundI bought this amp along time ago, and it's going to be replaced with something better ssuch as the Dayton Audio SUB-800 for deeper bass. I have had it over time, it was great when I first got it, today and yesterday it's making a scary rumbling sound that irritates me alot and gives me a headache and I have to bump it back it place to get rid of it. Good thing it does not hum or buzz, but still it makes that annoying rumble effect and when you touch the trimmer pot it makes a loud popping sound sometimes. It seems that the trimmer resistor on the front is wearing out and I am due to buy another one soon for my DIY subwoofer projects. The sub that I have did not produce deep enough bass vs the other subwoofer I have with my living room stereo and bedroom stereo. I wish that this amp would be improved with better potentiometer controls instead of trimpots for the subwoofer amp and crossover.
Date published: 2014-02-20
Rated 3 out of 5 by from work in progressI have purchased a number of products from Lepai and found them to be lacking. Because of the low price, there are low quality components and the power supplies can be different ones sample to another. The are a good basis for a DYI PROJECT if you are willing to do some work and component sourcing. What these amps need is better documentation, mine came with minimal documentation in Chinese. A forum or group where people can discuss mods, updates, etc. Would be helpful. If you are prepared to add about 30 bucjks and some work, these amps can be quite good.
Date published: 2013-10-13
Rated 5 out of 5 by from Gret value!!!For the money you can't beat it. I hooked up my passive Bose sub to it and it seriously kicks. No negatives here!!!! GET IT.
Date published: 2013-10-12
Rated 4 out of 5 by from PA amp? who woulda thunk?I'm not a professional sound guy nor am I an amp expert, but I am a drummer who is an experimentalist! I bought this to try out as a small PA amp for some acoustic and/or full electrical (you know those guitar players that got to have it loud) band jams! Well, suffice to say, I think it's going to work just fine for the small venue or in my case, backyard theater and band jams!!! So far I've just experimented with some mp3 music thru the PA, but the little monster cranked out some volume! Can't wait to see the look on the faces of the people that come jam! Now I truly have a portable PA! and on 25 acres! the hills are alive with the sound of drums...oops! music!
Date published: 2013-10-03

Product Q&A

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Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output

do you have eny mini amps like this for desktop type?

Asked by: saranga
This and all other Lepai and small Dayton brand amplifiers are designed for desktop use. It resembles a car amplifier, but it is not one.
Answered by: MattP
Date published: 2013-12-19

Concerning LP-168HA amp (20x20w +78w sub out)  Can I use a laptop power supply rated at 15 watts and 5 amps? 

Asked by: Hank44
As long as the power supply falls within the voltage range of this amplifier it will work. There will likely be no noticeable difference in output between a 4A and 5A power supply.
Answered by: MattP
Date published: 2013-12-04

Max line level input signal for RCA channels for this amp?

What is the max line level input signal voltage for this amplifier for each RCA input? Im running each RCA input with 1.2V off my macbook pro's 3.5 mm output jack (Macbook is the Pre Amp). If I get a line driver and boost the signal to say 4V per channel should this help with getting the amps temps down by using less gain on the amps? Im also using 15V 8A switching regulated power supplies for each amp and both amps are seeing 8ohm loads on all outputs. I have an SMD DD1 to check for distortion and the line driver I'm thinking of using has a Signal to Noise Ratio of 96 which is good, and is capable of 10V per channel. Sorry for the long post just want to get as much info as possible out there for my set up, so I don't damage the amps with to high of an input voltage. Thanks for the help.
Asked by: Harrison
I would not exceed 2 volts/ channel input signal and 1 power supply per amp.
Answered by: Nitnub
Date published: 2013-10-14

How to Connect to a powered sub with Sub-Out

I'm wondering how I can connect this amp with the sub-output to a powered subwoofer, specifically the Dayton Audio SUB-800 8"The sub has high level in and outs but I want to make use of this amp's sub out. I'm assuming I need to wire from the amp to the line-level inputs on the sub.
Asked by: CarterK
Simply go to high level inputs on your sub woofer.
Answered by: Nitnub
Date published: 2013-10-09


will this have the full 40W and 68W at any ohm load
Asked by: speaker freack
No. The chips used in this amp are incapable of putting out that sort of power, regardless of what power supply you are using. That is not to say this amp is unusable, or even that it isn't good. It may be great for specific applications, but it is not the sort of powerhouse that the specs claim.The satellite channels use a TDA7266S chip which realistically may put out at 6 watts @ 8 ohms, 12 watts@ 4 ohms, and maybe (a very ragged) 18 watts @ 2 ohms each. The sub channel uses a TDA7256 chip which with 14.4 volts input (the max) is reported to output 22 watts @ 4 ohms and 30 watts @ 2 ohms.Note: With 2 ohm loads all around you would be looking at a total of 66 watts. Considering that this is A/B topology, you would need to supply over twice that amount of power to cover efficiency losses. So, you might be able to get the full 66 watts of output with a 14.4 volt 10 amp power supply. However this would be absolutely pushing the limits of this amp, and sound quality would suffer. Not to mention the cost of your power supply would likely exceed the cost of the amp.
Answered by: Travis Rysdam
Date published: 2013-11-26

How can I hook this up to 12v sealed lead acid battery?

Can someone please explain to me how I could hook this up to a 12v sla battery? I want to use this in a portable application, but am unsure how to hook it up to the battery. Thanks
Asked by: Bradey
You will have to use a DC plug in order to wire this to an SLA battery.
Answered by: MattP
Date published: 2013-05-22


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