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. However, other options have popped up on the market with genuine chips, so… As for durability, I have a three Lepai LP-2020A+ that I picked up back in 2014 that are all still going strong.