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Question: What makes this product "upgraded" from the previous version? Lepai LP-2020A+ Tripath TA2020 Class-T Hi-Fi Audio Amplifier with Power Supply
Document: I bought the Upgraded version of the LP-2020A+ Class T Amp from Amazon to run a couple of project speakers as an upgrade to the horrible sound from my 42&#34; TV. Sound is great, especially from such a small package!No problem with power supply, no need to upgrade at this point (per some other reviewers).Purchased the same unit from another supplier and it would not power up. Don't know cause, possibly faulty power supply.
Unlike many other Class-T amplifiers, the Lepai LP-2020A+ has tone controls, and a tone defeat switch if you choose.I feed mine with my laptop + Audioquest DragonFly 24/96 USB DAC, and it in turn feeds a pair of Bose 601 Series II speakers. The &#34;B&#34; side is to feed that same playback chain with the Audio Out from my TV.Versatility: CheckPowerful: CheckSmall: CheckWhat's not to like? Oh, it's also extraordinarily inexpensive.
I have used quite a few audio amplifiers in the past. A friend of mine has recently purchased this improved Lepai amp and I had the chance to play with it. Below is my review.The amp is based on the Tripath TA2020 chipset. Tripath is not around anymore but this chipset somehow is still found in several amplifier products on the market. The sound quality from the Lepai is quite decent. It is rated at 20 Watts RMS.
I have owned 3 Lepai 2020s all which have performed perfectly, switching off temporarily when overloaded. Most people wince with pain before these feather weight amps distort. High efficiency 8 or 4 ohm speakers sing with these little jewels. Even 85 db speakers play moderately loud before audible distortion. The most noticeable improvement is the power supply and higher gain than the previous models making it easier to interface with I phones, etc. Yes there better sounding T amps but not at this price point.
This means that the output transistors have to be more robust with 4 ohm speakers than 8 ohm speakers. It's the cheap parts and circuitry, like the transistors, of the LP-2020A+ that are often failing and not Tripath's TA2020 chip because Topping uses the same chip but with better circuitry and other parts and doesn't have nearly the failures you see happening with the Lepai. Basically, you want the Lepai to do the least amount of work as possible.
I was looking for a decent, inexpensive amp to power some small speakers for music. I figured the Lepai would be a gamble; such a cheap amp can't possibly be a consistent 4 star product, right? Well, for me it wasn't. I ordered the amp and an upgraded power supply as many have suggested. The amp arrived, and I unpacked it and hooked it up. The sound quality was good, but certainly not memorable. Then I engaged the tone controls, and it all went downhill.
Admittedly, I was skeptical of the glowing reviews of the previous version of this product. I ordered the old version on here, but received the 2013 model. It's awesome. I hope Lepai does not raise the price on these because now I need one for a workout room, garage, and one for my office. Presently, this is powering two of the Andrew Jones Pioneer Bookshelf speakers as monitors for a computer and I am blown away.
I like the fact that it has an RCA jacks input and a small mini input. I use it for music videos and the Bass and Tremble adjustments are more than adequate. If you can remember Hi-Fi (one speaker) from the 50's this is a Cadillac. My only complaint is that the power supply is not built into the unit and I know why--size and heat..
The Lepai LP-2020A+ is a really inexpensive mini amplifier that offers 20 watts per channel, two inputs, and bass and treble controls. Wanted to use my old Bose Acoustimass with a laptop and ipod and with this the sound was amazing. I mounted the amplifier right on top of the sub-woofer and plugged in the speakers and an ipod and voil&agrave;, really powerful sound, I was impressed.
Going back and forth a few dozen times confirmed it. Another option is that with the 2013 model the LP-2020A+ is finally shipping with an adequate power supply. Either way I bet many people have unnecessarily purchased a new power supply for their LP-2020A+.
Answer: This newer version includes a delayed output relay to prevent loud speaker pops when the power is turned on / off. Also, some of the older units were sold with power supplies that couldn't quite supply enough current to provide adequate power. I've heard the newer power supplies are better. There's probably some other changes that I'm not aware of. If anyone can elaborate, please do.