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

Lepai 2.1 2x40W Mini Amplifier + 1x68W Sub Output

Brand:| Model: LP-168HA
Product Video
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.  
Due In: 5/16/2014
List Price$39.99
You Save27%
Your Price
Buy 4-up$27.82
Part # 310-308
Qty:  EA
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Product Details

Lepai 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.

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)20 Watts
  • Power (RMS/Channel 8 ohms)0 - 25 Watts
  • Weight Range< 10 lbs.
Lepai 2.1 2x40W Mini Amplifier + 1x68W Sub Output
  • BrandLepai
  • ModelLP-168HA
  • Part Number310-308
  • UPC844632091506
  • Product CategoryAmplifiers
  • Unit of MeasureEA
  • Product Rating
    (41 Reviews)
  • Weight1.75 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.

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Lepai 2.1 2x40W Mini Amplifier + 1x68W Sub Output
Lepai 2.1 2x40W Mini Amplifier + 1x68W Sub Output is rated 3.9268 out of 5 by 41.
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: 2014-04-04
Rated 1 out of 5 by from no remote!!!!Have not used it yet but I just got it and their is no remote. they have a remote in the pic! sending it back
Date published: 2014-04-07
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: 2014-02-12
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: 2013-10-04
Rated 4 out of 5 by from Have fun with it!I bought my first unit about a year and a half ago and discussed the inflated wpc issue but noted at this price point, you could have a lot of fun with the cool little amp. I have now bought 7 of these and have continued to enjoy the possibilities. Keep in mind it is a $27 amp. Some components seem cheap but the pros far out weigh the cons. Unless I am delusional, the quality has also increased since my first unit. Newer units come with a 3A power adapter instead of the 4A the original units came with, but I don't see much drop in power. Best power source I have played with is a 12v car battery. I have had good luck with some small tang band full range drivers and the new Faital 4 inch full range teamed up with an 8 inch Dayton DVC sub made for a cool boom box.
Date published: 2013-10-03

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Lepai 2.1 2x40W Mini Amplifier + 1x68W Sub Output

What is the best power supply for getting max power from this amp?

What is the optimum power supply?
Asked by: bcuttn123
While the amplifier chips are rated for 18v max (before they self-destruct), all of the electrolytic capacitors are rated for 16VDC so you absolutely MUST stay below that. My guess is you should be fine with a 14-15 volt supply as long as it is well regulated so it never gets close to that 16v limit - caps will explode if run over-voltage.In theory, with a 15-volt supply you could see current peaks of 3.8 amps on EACH amp channel when driving a 4-ohm load, meaning the possibility of 11.4 amps with all 3 channels driven in-phase. In reality, you'll probably never need more than half of that.In my experience, this type of automotive bridged-output amps see significant output power variations based on the input voltage. Similar amps I've measured go from 10WPC to 15WPC by increasing the power supply from 12 volts to 14 volts, so it's worth it to keep the supply as as high as you can safely go.
Answered by: Modifry
Date published: 2014-01-30

Bi-Amp To run 2 sattelites + A sub?

Can you hook up the channels of 2 of these units in parallel to achieve80w Max + 132w max @ 4-8 Ohms per channel?
Asked by: Wolf Punch
What you are talking about is not bi-amping, if I understand you correctly. It sounds like what you want to do is bridge the 6 channels of 2 separate units down to 3 (2.1) output channels. This is possible, but not safe and it will likely damage the units. In order for this to work you would need a signal inverter on each of the outputs on one of the amps to make it bridgeable. Bridging two amps will increase the output voltage and may make the combined output louder than they are independently, but bridging these will cause the output current to be higher than either of the units can safely handle and fry the amps.Don't do it. It would be a waste of money when you fry both amps.If you find that one of these is not loud enough for your purposes, try getting more efficient 4 ohm speakers. If that doesn't cut it try a better amp. The Dayton 2.1 plate amp would be a good option. Even though it shows a lower power rating, it will out perform this Lepai by leaps and bounds.
Answered by: Travis Rysdam
Date published: 2013-12-21

2x40watts or can I Bridge for 1x80watts?

Im using this amp for a 3 driver speaker cabinet project for a small garage gym, the 12in Sub is wired using both the amps sub outputs. Now originally the cabinets 3 way crossover( 900Hz and 2800Hz) had the sub going to it but I had to rewire it just to go to the amps sub outputs (I had no other choice). When I did this my midrange didn't work at all. After being stumped for days as to why the midrange quit working, I ran a wire from the subs + to the subs - on the 3 way crossover and now the midrange works and sounds great. So my main question is with the 2x40 watt outputs for the L or R on the amp, if I'm only using one channel will the amp sense that, and send the 80 watts to only the channel I have hooked up or will I only get the 40W still? If I only get the 40W from one channel I have hooked up, is it safe to bridge both channels to get a 1x80W channel?
Asked by: Harrison
First off, the power rating is with a decent power supply behind it. This amp works great for a desktop unit. It is not bridgeable. What would be a cool build, using one 12" woofer to cover the lows, then use two mid range and two tweeters. Utilizing both channels from the amp (stereo). All in the same enclosure, this will work fine for a gym. Find a efficient sub woofer, preferably ported.
Answered by: AR3A
Date published: 2014-01-30

2.1 or 4 channels?

The description obviously says 2.1 channels but in the pictures it apears to have 4 channels. Is the sub channel simply brigged with their own crosover? If so are they separate left and right channels or two mono ones?
Asked by: Derk
The subwoofer output is mono, one channel. There are, however, two sets of connections that are in parallel with each other.
Answered by: mikevv
Date published: 2014-01-30

can this lepai's sub out power a single aura ast-2b-4 pro bass shaker?

Asked by: stealthbomber
Yup. it wud be perfect for that.
Answered by: Fanden
Date published: 2013-04-24

Can you use the sub outs to connect to a powered subwoofer?

Asked by: Auggie
The Lepai 2.1 2x40W Mini Amplifier has a dedicated powered sub-woofer output that is adjustable. Many powered sub-woofers have inputs that will accept amplified inputs to accomodate equipment that does not have a sub output or an electronic crossover. If your powered sub-woofer is capable of receiving amplified signals at it's input then this will work.You could also install a line level adapter across the speaker outputs of the Lepai 2.1 2x40W Mini Amplifier that would drop the amplified level to headphone levels and use this to provide a line level input to your sub-woofer. I have included an example in this answer, the Metra IBLOC01. This unit would connect to the sub speaker output of the Lepai 2.1 2x40W Mini Amplifier and give you two RCA jacks that you can connect to your powered sub-woofer with standard RCA cables.Good Luck
Answered by: Nitnub
Date published: 2012-08-03


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