I'm uncomfortable with why you would make such a comment here without any supporting evidence.
Do you see something in the build quality that you lead you to that conclusion? It's easy to throw stones,
harder to pick them up.
Personally I find the amp overpriced for what it is, you can do as well for half the money from Buckeye.
Yes and I get tired of having to explain it every single time. NAD is built with the cheapest possible electrolytics, very often placed strategically close to heatsinks to shorten their lifespan even further so that the device breaks down. These devices are built to fail, guaranteed. Same goes for resistors for example, mostly underrated which results in high operating temperatures.
I've had about 15 NAD amps from the last 30 years here, same trash all the time. Just to tell you a few: C352BEE wrong transformer because they were lazy and took a transformer from a bigger model having to drop the voltage quite drastically over resistors, therefore you get extremely hot parts that fail. C370 has class-A modules enclosed in cans running hot and which contain tiny electrolytics (again C-tier chinese caps like Lelon, G-Luxon and such), every one fails, I serviced them. C375BEE same story, undersized parts, drivers run extremely hot, electrolytics fail, atrocious soldering quality.
The Masters series is no better, runs hot and fails quickly, which is a major shame because they do sound good, but simply die prematurely.
Audiolab and Cambridge from recent years seem to suffer similar fate (same OEM?).
The 90's models (MONITOR serie) have decent caps (a mix of A/B tier like Elna + TEAPO) but suffer from corrosive glue while they already KNEW darn well that glue will be eating components over time as it did with Sansui.
See the first 2 failure points on the C298: small electrolytic close to the white part in the top right corner. If it's a resistor, they know this part will run hot, heatsinking a resistor is not really common. Another one is the way the bridge rectifier is touching the cap next to it, this could be a production problem, though.
Also notice C-tier caps everywhere but on the output modules.