3 Year Electronics Protection Planfrom Asurion, LLC
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Lepai LP-2020TI Digital Hi-Fi Audio Mini Class D Stereo Amplifier with Power Supply
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- Uses a TPA3118 to produce clean, efficient audio with detail
- Economical price and tremendous performer
- Compact size makes this amplifier great for projects and DIY audio applications
- 3.5 mm stereo jack connects easily to most any iPod, smart phone, or tablet
- Use RCA jacks to connect to CD players, TVs, or streaming media players
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The Lepai LP-2020TI mini power amplifier provides 20 watts RMS of clean audio power to any set of stereo speakers. This amp is perfect for using on any desk, countertop, workbench, and even in DIY projects or mobile audio applications.
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I modified mine by taking the guts out of a 12v USB power adapter for a car, and soldering it to the switched 12v power of this amplifier. That way, the amplifier can directly power a Bluetooth receiver, and the Bluetooth receiver shuts off when the amplifier is turned off. This was useful to save an adapter, and to give me a way to conveniently turn off the Bluetooth adapter, which refused to allow you to disconnect.
I am posting photos of my modification for reference and to give folks an idea of how to do it. Don't ask me questions about how to do it. If these photos don't make sense, the project is probably beyond your capabilities.
However: I'm docking two stars for the cheap, cheap, cheap power supply. After the first day of use, I started hearing a high-pitched whine. I traced it back to the power supply that came with it. Just to make it clear: the power supply was plugged into the surge protection circuit on my true sine wave battery box. I unplugged it, let it discharge, and plugged it back in. The whine went away for a little while, but then came back. I repeated the process of unplugging it, letting it discharge, only this time when I plugged it back in, I got a little burst of sparks. That was enough to convince me that the power supply should NOT be trusted.
It's unfortunate that having to purchase an additional power supply ended up being a hidden cost. The amp itself is working great. I wish companies would stop packing in cheap non-UL (or any regulatory body) fire hazards with their products. They'd probably find their return rates for 'defective' products would drop.
It's been years since I paid close enough attention to audiophile issues, but I felt comfortable enough with the new product to order a couple. Right now I'm listening to one driving Polk Audio bookshelf speakers which I have running as background "infill" for a whole-house system running Chromecast Audio.
And I'll be darned if I notice a substantial difference in sound quality in comparison with far more expensive receivers & speakers on other zones. At this price point, I have to call it a miracle. After I've given these neat little devices more of a workout, I'll come back and bump them up to five stars. If the miracle holds out. (Edit: Two months later, I now own three of these and have given two more as gifts. I also own Accuphase and McIntosh gear and though it's apostasy to say so, this one gives more bang for your buck. So: 5 Stars.)
Update: A week later, so far so good. Have two of them hooked up and they never even get warm and I have cranked them a bit. Sound is still reasonably clean which is amazing at the price point. There can be a touch of shrillness in the upper midrange but since I'm usually listening to Pandora the source material can be the issue. One note: when you switch them off, there's an unpleasant transient pop delivered to your speakers--not loud enough to blow anything, but annoying nonetheless. Not enough to cut a star from the rating anyway.
PS: Please note that I have made reference multiple times to this item's price. It's because that's the context within which I can refer to these amps as 'small miracles'. They're certainly not going to outperform a $1500 amp, but they'll definitely give your average $100-150 amp a run for their money. BTW, on both of my units, the bass and treble controls (as well as the balance control for that matter) work fine. HTH!