Lepai LP-2020A+ Teardown & Testing

This is the amp that started the “cheap and tiny but actually hi-fi” amp craze. Parts Express claims (through one very serious spokesdude, I might add) that they discontinued the model due to the difficulty of acquiring the Tripath chips. This is a fairly legitimate argument considering Tripath went bankrupt in 2007. As for durability, I have a three of the original Lepai LP-2020A+ that I picked up back in 2014 that are all still going strong in 2020. The LED on one has started flaking out, but that’s about it.

1% THD @ 40Hz, JBL LX-22 Speakers

Input Voltage	Input Current	Input Power	Volume	Output Voltage
12V	1.12A	13.44W	69.8dB	6.67V
13V	1.22A	15.86W	70.4dB	7.37V
14V	1.30A	18.20W	72.0dB	7.95V

1% THD @ 1kHz, JBL LX-22 Speakers

Input Voltage	Input Current	Input Power	Volume	Output Voltage
12V	0.71A	8.52W	112dB	7.51V
13V	0.77A	10.01W	113dB	8.13V
14V	0.82A	11.48W	113dB	8.69V

Specifications

Brand	Lepai
Model	LP-2020A+
Manual	LP-2020A+ Operating Manual
Amplifier Chip	Tripath TA2020-020
Availability	Discontinued Sold for ~$18 in 2014 and ~$30 in 2015.
Face Text	Lepai Stereo Class-T Digital Audio Amplifier
Board Text	Lepai LP-2020A+ MADE IN CHINA
Right Channel	Top Red Jack
Left Channel	Bottom White Jack
Input Power Label	DC12V2A
Included Power Supply	ONK-0122000 12V/2A
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