Big source improvement using CD player


I borrowed a friend's esoteric dv50s CD player.  I could not believe the difference between it and streaming Spotify premium.  I am now in the market for a CD player.  One thing, the esoteric does not play DVD-R.  Can anyone recommend a comparable CD player in the used market that does? I'm looking in the $800 - $1500 range.  
puffbojie

Showing 10 responses by geoffkait

It’s doesn’t require rocket science 🚀 to show that scattered CD laser light hurts sound. You can demonstrate it for yourself. All you need is a GREEN Sharpie or any brand chisel tip permanent marker. Paint the outer edge of the CD green. Voila! The sound is better. That’s because some of the visible red portion of the scattered laser light gets into the photodetector and is detected as “real signal.” And the color green absorbs visible red light. The sound would be even better if the invisible near infrared scattered light is absorbed as with New Dark Matter. Recall the laser wavelength is 780 nm, near infrared. I did not create reality.

The visible 👀 red portion is only what, about 1/3 of the total CD laser bandwidth, thus when the other 2/3 of the scattered light is absorbed the sound is much better still. Yes, I know what you’re thinking, “But my system already sounds fabulous.“ Pseudo skeptics never roll their sleeves up and investigate for themselves. That’s because they aren’t real skeptics. They’re rather argue until they’re blue in the face.🥶
I don’t have to prove anything. If you’re so smart prove me wrong, Mr. Smarty Pants. 👖 Betcha can’t. So far you’ve been shooting blanks. Perfect Sound Forever. Yeah, sure, pal. 
You’ve got an answer for everything. What about this, what about that? I am familiar with that game. 
Buffering the data doesn’t prevent or correct the damage to data done when the laser attempts to read the physical data on the disc due to fluttering of the disc and scattered laser light getting into the photo detector. Buffering only stores the damaged data temporarily. The damage to the data and sound occurs in the first picosecond when the laser tries to read the data. All the King’s horses and all the King’s men couldn’t put Humpty Dumpty together again. 🍳
The Reed Solomon error detection and correction algorithms are much more effective for predictable errors like radial scratches and fingerprints than for unpredictable errors like scattered CD laser light and fluttering of the CD whilst playing, for which the laser servo feedback mechanism is not 100% effective. External vibration is also a big challenge for both Reed Solomon and the laser servo feedback system. That is why the sound you hear from a CD is missing information that is clearly audible on the vinyl or tape version of the same recording. And it’s why CDs frequently sound hard and 2-dimensional and sour. It’s not the CD’s fault, it’s the CD player’s fault. The CD itself contains all the intricate nano scale physical information, you just can’t extract the information correctly without rectifying all the inherent problems in the CD player. That’s the way the cookie crumbles.