Marantz CD63 & CD67 mods list

[navin]

Originally posted by rowemeister
I will have to post my 63KI mods too!

Great. I await this.

[float]

Its good to see this topic again

I've been meaning to bypass the HDAMs for ages; it seems a totally unnecessary waste of parts when the opamps will drive headphones!
It may be worth adding an 18 volt supply just for the opamps at the samr time - apparently they like the higher voltage and it would increase their output capability

I'll also confirm (IMO) the 627s easily better the 2132/2134s.

[float]

Another thought; has anyone done a reality check; modded cd63 against a modern decent player?

I haven't and it does nag at me that I might be wasting my time..

[DJNUBZ]

Would these mods work the same on the cd-53?

[float]

Originally posted by DJNUBZ
Would these mods work the same on the cd-53?

AS far as I know, the cd53 doesn't have HDAMs, so you're off to a flying start
I'd guess this makes the opamps even more important, so get some good ones in pronto!

i'd say all the usual mods should work just the same.

[6h5c]

Originally posted by DJNUBZ
Would these mods work the same on the cd-53?

Originally posted by float



AS far as I know, the cd53 doesn't have HDAMs, so you're off to a flying start
I'd guess this makes the opamps even more important, so get some good ones in pronto!

i'd say all the usual mods should work just the same.

Yep, I can second that. The CD53 and 63 as well as the CD57 and 67 have the same PCB. All four use the same DAC, analog filter and HDAM, and parts of the circuit are very much alike, exept for little differences. But a CD57/67 is preferred for better PSU, and the layout is definately improved.

I buy cheap broken CD57's for a scratch, and then mod them for about 150-200 euro's. They blow away a lot of expensive players. Always like the looks on peoples faces when I press play on 'an old CD57'....

[navin]

Originally posted by float
Another thought; has anyone done a reality check; modded cd63 against a modern decent player?

I haven't and it does nag at me that I might be wasting my time..

Me too! esp since my 63Ki is about 10 years old.

[Fidelity Audio]

Yes CD53 is easily modded, the only difference between it and the 63 is the HDAM and a few features.

The only problem with the 53/63 is when you dont want to heavily mod the player....what I mean is the 63SE has alot of uprated components so is already 'modded' by marantz and will benefit a few good choice mods like the op amps , some bypassing and a few caps like Blackgates.

If you are going to eventually change most caps and resistors to higher spec items then you may as well start off with the 53/63.

Best to practice on your player and if the time arrives buy a KI off ebay and do a component swap to it. The KI benefits from the SE caps etc + copper chassis and a toroidal transormer.

[Luke]

I have the schematics of this player and it seems that the hdam is a discreet shielded buffer using highly desirable jfets!
Ive read diyers on these threads talk about adding discrete buffers to increase performance and now that a manufacturer has gone to the trouble of giving us one it sounds better without
Could it be that it sounds different and to some tastes its better?

regards arthur

[Fidelity Audio]

I have not bypassed mine yet, but I will be to see the differences.

The other thing to do is possibly upgrade the components in the HDAM.