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RE: Kevel 1 upgrade to Marantz CD63 ki

Inter_Voice wrote:

lewis hurlin wrote:

I would love to hear some opinions from people who have had this done before I decide . I am using the CD player with an rdac at the moment  . I think the upgrade would improve things some what

If you use your CD 63 as a transport you will still hear improvements in SQ, in particular, you will notice that the bass is much extended and much tigther.  It is because the servo has more stable power supply as FA uses a 50VA TX to drive the servo circuit.  To further improve the SQ I would also suggest to replace the stock 8.xx Mhz clock with a very low jitter clock of much higher quality.   

 

Where do you buy the clock etc?. Fidelity Audio DIY components seem expensive.

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RE: upgrade to Marantz CD63 ki

BigH wrote:

Inter_Voice wrote:

Trust me you will be amazed by the BIG improvement in SQ when you have done all the mods  Smile

 

I'm curious to know how the sound has changed?

The bass is much more extended and tigther, more space and air, better clarity with bigger soundstaging and positioning of instruments is very accurate, mid range is particularily GOOD (warm and touching), high frequencies are extended but no feeling of fatigue on long hours of listening.  I listen mostly Jazz (vocals), classical music and sometimes blues which this modded CD63 suits them excellently.  Sorry I have no experience on Rock music. 

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RE: Kevel 1 upgrade to Marantz CD63 ki

BigH wrote:

Inter_Voice wrote:

lewis hurlin wrote:

I would love to hear some opinions from people who have had this done before I decide . I am using the CD player with an rdac at the moment  . I think the upgrade would improve things some what

If you use your CD 63 as a transport you will still hear improvements in SQ, in particular, you will notice that the bass is much extended and much tigther.  It is because the servo has more stable power supply as FA uses a 50VA TX to drive the servo circuit.  To further improve the SQ I would also suggest to replace the stock 8.xx Mhz clock with a very low jitter clock of much higher quality.   

 

Where do you buy the clock etc?. Fidelity Audio DIY components seem expensive.

Yes you are right the FA clock is extremely expensive (£250 !!) nevertheless it is the best performed clock available on the market from the discussion in the DIYAUDIO.COM forum.  I also used a 8.xx MHz clock from FA for my CD63's servo.

However for the DAC and decoder (16.xx MHz) I used this one from Korea, unfortunately this supplier does not provide a clock with 8.xx Mhz. 

http://www.ebay.co.uk/itm/R-Clock-High-Precision-Low-Jitter-Reference-Clock-with-Ultra-Low-Noise-Regulator-/230871603430?pt=LH_DefaultDomain_0&hash=item35c10518e6#ht_961wt_1000

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RE: upgrade to Marantz CD63 ki

Inter_Voice wrote:

stefanom wrote:

lewis hurlin wrote:

Thanks for the tips.  I will send it of to fidelity as not confident with a soldering iron.  I want the level 1 upgrade plus changing phono sockets as stock ones are  crap , which ones should I go for? Also mains cable too

Hi I replaced mine RCA sockets with Neutrik NYS367. Gold-plated and fit easily to the chassis.

You should mod your player, you won't regret it. I am in the process of modding my 15 year old CD63 KI. I have already swapped diodes and some critical capacitors in various stages. My player has taken a leap forward in performance. Next on agenda is replacing op-amps for much better ones and adding low jitter clock.

Trust me you will be amazed by the BIG improvement in SQ when you have done all the mods  Smile

I suggest you change the stock transformer with a much bigger capacity and there will be noticeable improvement in performance.  Then change the smoothing caps for the transformers and other critical caps for the servo and opamps.  Change the diodes, disable the HDAM and headphone circuit, disable the stock muting circuit and replace it with relay operated muting circuit, change the opamps to 4562HA or diccrete opamps like Burson, change the low jitter clocks for the servo (8.xx Mhz), DAC and decoder (16.xx Mhz), use very low noise regulators supplying independent power to the ICs, decoder and DAC etc. Put damping pads on the CDP case.

Thanks for the tips Inter_Voice. I have swapped the rectifier diodes to schottkys, replaced most of the caps in PSU...for.ex. smoothers to Panasonic TSUP 22000uF. I have removed the muting transistors and bypassed the DC blocking caps. Replaced caps around opamps and in digital section with Rubycon ZLG/ZL. I have ordered LME49720HA opamps....they get great reviews. When I have changed them, I will bypass the HDAM circuit.

Then it's low jitter clocks, low noise regulators, bigger transformer...and on and on....til I have replaced every component in the player. Wink

Marantz CD63 KI modified/Marantz CD6005 - Marantz PM6005 - Paradigm Atom Monitor - QED Qunex 3 - QED silver anniversary XT - Sennheiser Momentum/Sennheiser 558

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RE: upgrade to Marantz CD63 ki

stefanom wrote:

Inter_Voice wrote:

stefanom wrote:

lewis hurlin wrote:

Thanks for the tips.  I will send it of to fidelity as not confident with a soldering iron.  I want the level 1 upgrade plus changing phono sockets as stock ones are  crap , which ones should I go for? Also mains cable too

Hi I replaced mine RCA sockets with Neutrik NYS367. Gold-plated and fit easily to the chassis.

You should mod your player, you won't regret it. I am in the process of modding my 15 year old CD63 KI. I have already swapped diodes and some critical capacitors in various stages. My player has taken a leap forward in performance. Next on agenda is replacing op-amps for much better ones and adding low jitter clock.

Trust me you will be amazed by the BIG improvement in SQ when you have done all the mods  Smile

I suggest you change the stock transformer with a much bigger capacity and there will be noticeable improvement in performance.  Then change the smoothing caps for the transformers and other critical caps for the servo and opamps.  Change the diodes, disable the HDAM and headphone circuit, disable the stock muting circuit and replace it with relay operated muting circuit, change the opamps to 4562HA or diccrete opamps like Burson, change the low jitter clocks for the servo (8.xx Mhz), DAC and decoder (16.xx Mhz), use very low noise regulators supplying independent power to the ICs, decoder and DAC etc. Put damping pads on the CDP case.

Thanks for the tips Inter_Voice. I have swapped the rectifier diodes to schottkys, replaced most of the caps in PSU...for.ex. smoothers to Panasonic TSUP 22000uF. I have removed the muting transistors and bypassed the DC blocking caps. Replaced caps around opamps and in digital section with Rubycon ZLG/ZL. I have ordered LME49720HA opamps....they get great reviews. When I have changed them, I will bypass the HDAM circuit.

Then it's low jitter clocks, low noise regulators, bigger transformer...and on and on....til I have replaced every component in the player. Wink

Right you are on the right track.  Well done.  Please report back what you think on the improvements in SQ in order to shed some lights to those who still have doubts about the benefit of using better components in the CD63.  

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