As noted by many other reviewers, these don't have enough power to shake the house, but they will provide enough clean sound to fill a small to medium sized room

The (well-regulated) power supply provides under this condition 1.56A at 12.7V DC

There's more than enough power to fill a small room.

It works well and puts out sufficient power for those speakers

But when on its side, it puts out enough power for me to use it while saving up for a nicer amplifier for my turntable

Just enough power for his room

At one time the Lepai shipped with what sounded like a very suspect power supply from Vonage

Just don't expect it to be the super power amp you are hoping for

Remarkably good sound and power considering the size

There are many suitable power supplies on Amazon that sell for about six bucks

Another option is that with the 2013 model the LP-2020A+ is finally shipping with an adequate power supply

Out of two that I purchased elsewhere, not at Amazon, one had a bad power supply

In case you're wondering, it has way more than enough power to get the job done.

When I purchased it, I was afraid that it would have enough power.

This amp delivers truly clean power

Decent power for how inexpensive the amp is

I don't see where the "2013 Upgraded Model" is any different than the standard model, so I would suggest saving the difference and buying the standard model now that they have replaced the terrible power supplies the earlier ones hadI have 3 of

I do wish the blue light indicating that the device is powered on was not so bright

Not enough power to pull a speaker.

Less power than I hoped for but perfect for desktop, wouldn't recommend for much more than a 10'x10' room

I am powering my outdoor speakers with this and it works well.

the amp will benefit from a more powerful power supply.

I've made several amps so far out of varying components... and this by far had the best overall power and sound

but I do know what decent power sounds like

was screechy).As others have stated, a separate better quality power supply would be a good idea especially since we're still talking cheap at $30 instead of $20 with the better supply although I have not heard the amp with these other power supply's

The most noticeable improvement is the power supply and higher gain than the previous models making it easier to interface with I phones, etc

Its completely silent, low power (<10W), and is light enough to be attached to the back of my TV (I used a strip of velcro)

Just be sure to feed it a clean signal with a well-regulated power supply, and you'll get a clean result.

It has enough power to make my bookshelf speakers rumble.

It's a cheap amp, with a cheap power supply provided

My room is about 15x15 feet and this delivers enough power to fill the room with sound at volume 3 setting

But, it should ship with the proper power supply, don't you think?

I was worried that my speakers wouldn't be getting enough power from it, seeing as my receiver was 120 watts

If you get a power supply that works, the amperage is too low to get the most out of this amp anyway

This one had a defective power supply

Enough power with the 3amp power adapter to fill my office.

but that's just another reason to get the better power supply

Overall power on this one is not impressive.

good power

I now own two of these, one with a Vonage power supply and this one with a proper power supply.

For 15x15 feet room, this thing could actually output enough power for ear damage

I don't doubt that the LP-2020A+ has shipped with some bad power supplies

The power supply that everyone is whining about is a 12 volt LCD monitor adapter

The story was that the provided power supply was too weak at three amps and a better power supply would solve this issue

Great little amp with more than enough power to drive my bookshelf speakers as studio monitors for my home studio.

I expected a little bit more power from it, but it works fine for what it costs

It gives more than enough power to make your speakers loud and sound great, I love it!

Here goes:Pros:-Works-Sounds clear at low volumes-screw holes on sides in case someone wanted to, say, screw the amp on to the bottom/side of a desk (like I did)-Provides decent power for my Monoprice MBS-650s.-Built-in EQ controls with bypassCons:-Cheapish build quality, although that is to be expected at this price point

Plenty of clean power and sound for a office or bedroom - up to 60% on the volume knob - then she runs out of gas so to speak.

There was just no where near enough power output.

Don't know cause, possibly faulty power supply

Not as much power as the Lepai original, but it will suffice.

While this may be a good bargain for less than $20, this little amplifier simply doesn't have enough power properly drive some decent speakers at sufficient volume

It does sound very good at appropriate power levels

There is no power hum or any additional noises when in operation.

I would recommend this to anyone in need of an amp for powering good quality speakers without the use of a component stereo receiver.

Sounds great with ample power for the casual event.

I guess if they gave a better power supply it would be 30 bucks instead of 20

It works pretty well, but whenever we switch sources, power the amp on, or start playing sound after long pauses, a loud pop comes over the amp

I actually expected it to be a cheap-o, with static and obvious flaws.