Best preamp is no preamp: always true?

Actually, I have been reading and hearing more and more that CDP into AMP direct is very very seldom a good idea. I think you guys have highlighted gain and impedance issues as possible cause. What would be a typical sound "default" of a direct CDP to AMP? too harsh a sound (digital glare) or, opposite, slow/fatty mid-range ? or it varies?
Thanks

Newerphile, My opinion, lost dynamics and frequency extremes, could sound flat and yes make it seem more like a digital boring source. maybe not every case but in most, basically look at it this way a preamp is sorta line level amplification like an EQ would be, it will boost some of the frequencys to a fuller sounding range not because that is really its intention but because no matter what you are playing with the tiny voltage signal coming from the cd and any extra gain added to a signal that small well will sound like 10 times more effective than going from like a 50 watt amplifier to a 350 watt amplifier if that makes sense, is it pure?, is it Zero distortion?, nothing is, but the closest it sounds like emotion in the music the better in the end, this is mostly achieved by using a preamp in the chain than not from my experiance.

I've tried it in the past and it's not bad. But the preamp/buffer stage makes it a whole lot better IMHO. It never sounded slow or fat. Just slightly hard on cymbals and such. It's like having too much of a good thing that wears on you over time.

If CD playback is your only source then you'll just need to get an expensive CD player with high output + volume control. In this case, the "less" component is better off.
This is different from having a passive preamp. I would go with that than having a passive preamp in between the sounce and amp.
The ONLY drawback is CD player choice. You will be limited to less than a dozen of expensive players to choose from.

As far as DAC goes, it is same idea as CD player with volume control. In this case, you'll be limited with DAC that has high output plus build-in volume control.

If CD playback is your only source then you'll just need to get an expensive CD player with high output + volume control. In this case, the "less" component is better off.

I copied S23chang's post not to necessarily single him out and disagree, but because his comment is so germain to my situation.

I own a fancy shmancy digital player with built in volume control, and I have found that I prefer the sound of my system with a preamp in the chain. This preference has been consistent through several listening sessions with four different preamps. Other owners of the same digital player swear by going direct.

I suppose this illustrates that there are no absolutes, and one needs to listen for oneself and choose what he/she prefers.