Ok, so why install a new clock? Isn’t there one in there already? Yes, your right. But by using better parts like crystals with lower ppm and also design a very clean power supply to feed the clock, you can make your player sound much better. And the reason is lower jitter.

But what is jitter? There is plenty of really good places to go read up on it. Here’s some.

http://www.audiocraftersguild.com/AandE/cd-jitter.pdf (PDF warning)

http://www.stereophile.com/reference/590jitter/

Ok, lets look at the schematic. Here you can see the clock and two capacitors, C404 and C403 and the clock is X401. The clock is feeding into the DAC (PD2029A) (you can find the complete schematic in part one)

We need to remove the crystal X401, and the two capacitors, C403 and C404. The old load capacitors are no longer needed. The next step is to connect the Kingwa clock to the DAC. As seen on the schematic, the clock is 16.9344Mhz, so we need to use the correct outlet from the Kingwa clock. There is three different divisions of the clock. You need to solder two connections. One for the ground, labeled GND, and the one just next to it, labeled 1/4F0.

Now we need to feed the signal generated from the new clock to the DAC. Connect one of them to the hole in C403 furthest away from the DAC. I put the GND line here. The other one should go where the old clock used to go. Use the one closest to the large capacitor for the DAC (see picture).

The Kingwa clock is going to need power. Any voltage between 10-30 V DC will do. I will have an upcoming article about the power supply I built for it. You will find the connectors for the power on the over side of the Kingwa clock.

Next step, testing. Put in a cd. If you have the cover removed when doing this REMEMBER DANGER HIGH VOLTAGE! No touchy touchy while doing this. Not on the part we soldered but on the power supply. Anyway, If you didn’t know this you really should not be doing this in the first place.

When you press power it should read the TOC from the CD. Press play. If the display shows the seconds ticking, you can turn the player off, unplugg and put the cover back on.

Will be back with a writeup and test diagrams when I’m finished…

But today I went to a vinyl record sale and I found it! As soon as I saw the album cover I knew that it was the right one. So now I can finally listen to Art Attacks masterpiece Animal Bondage

But finally I got a Koss Porta Pro by recommendation from a friend. These headphones are not audiophile, but good enough to make me realize how much better MP3 files coded in 160 or higher sounded. But to accomondate that kind of upgrade in sound, forced me to buy a 15gb third generation iPod to fit more songs. So I recoded all my music to AAC in 160kbit and faced out older songs when I could get my hands on a higher quality version. The third generation iPod worked excellent for me for over three years. Then I upgraded my headphones to some in-ear headphones which took the sound quality up a notch again. A month ago I bought a iPod Classic 160gb and now have all music in lossless full quality.

But guess what, I bought a vinyl record player a while ago. Some would say that it’s a step backwards, but have to disagree. There is something about listening to vinyl. It’s like smoking a pipe, It’s a bit more involved. An other good aspect of this is that I’m forced to actually listen trough a whole song. But one thing is for sure, you need to invest in rather expensive equipment to get good performance from vinyl. But one can still find interesting records dirt cheap. It really is the black gold.