QUOTE(CptTripps @ Jan 15 2014, 05:58 AM)
I wouldn't worry too much about THD in a 914. Honestly, you're never going to have a really great audio experience in a 40yr old car with a plastic roof...and a VW motor right behind you...with your butt 8" off the concrete...at ANY speed.
I had a customer years ago that brought me a no-name amp from a big car stereo show. It was 20 Watts per channel @ 10% THD. He wanted to run this on his stock Honda radio. I told him it would sound like crap since 10% of the signal was noise.
I was right! sounded worse than the stock radio's internal amplifier. He wanted a refund but since I warned him and he said do it, he did not get his money back.
The FTC (Federal Trade Commission) regulates home HiFi systems. If they claim 50 Watts per channel, the amp must produce as advertised. The FTC does not regulate car stereo components. They can claim anything they want. Buyer be warned! You cannot get 1000 Watts from a 20 Amp fuse...
Most Name brand manufacturers have an agreement to correctly rate their equipment. If you have never heard of the brand, do not buy it.