Crown actually started building RTR machines. Their reputation built quickly and soon was stellar.
If you check out their website
www.crownaudio.com you will find some interesting info. They eventually developed amplifiers, including the famous DC-300. At one time they built preamps, poweramps, tuners, output control centers, speakers and tape decks.
As their market reputation grew for power amps and later microphones, they eased out of what we would think of as consumer products in favor of pro products.
In the 60s and 70s, they were considered by many as serious competition to MacIntosh equipment. Their last consumer targeted line level products were the PSL-2 preamp and the PFM-3 tuner.
The Studio Reference Series amplifiers are pretty well regarded.
The same criticism has been made of Crown as has often been made about JBL speakers, and that is one of "harshness". That's actually pretty subjective since many people have gotten used to some particular coloration in their sound reproduction products.
Personal opinion here : I believe that Crown Audio saw where the market was going years ago and decided to focus on the pro market exclusively.
I have several complete set-ups consisting of a Crown PSL-2 preamp, PFM-3 tuner and various Crown poweramps including PS-200, PS-400, DC300AII and Power Line Four. I find that they pair well with JBL 4311/4312/L100/L200 speakers.
I find the sound to be "revealing", and not harsh unless the source material is.
Just my humble opinion.
I know that I have been happy with the JBL and Crown combination for quite some time and can recommend that given the opportunity to acquire a good Crown poweramp, you should try one.
I have no personal experience with any of the pro-oriented units, just the units mentioned earlier.