I have an old CD player, Onkyo DX-706. A rigid mechanic and good 1bit CD player. And I already upgraded the component. With Sfernice and Caddock non inductive resistors, Rodenstein and Holco resistors, Elna's Cerafine and Silmic (for DAC and analog stage), Panasonic Purism for PSU. And Analog Device Op-Amps (AD827JN and AD8066AR) for analog stage.
But I want a new experience with another CD player, especially new technology like 24bit/192KHz, new precision clock etc.
I looked for some brands and types, until I read Onkyo DX-7555 CD player reviews, with reasonable price, I think that's a best-buy CD player (less than US$1000). I chose it.
For standard components from factory, Onkyo DX-7555 sounds good for detail, imaging, vocal and natural.
With it's new 24bit/192KHz technology, I still want the sound of DX-706 - natural (not fatigue for ears) close to NonOverSampling DAC, but with more detail, better imaging, better vocal and nuance.
So, after only 19 days (from date of buy), I started to upgrade Onkyo DX-7555:
DAC, analog stage and power supply.
Using more sophisticated components like:
- Audio Note and Shinkoh tantalum resistors
- Vishay Sfernice and Caddock non inductive resistors
- Carbon composite resistors
- Black Gates caps, but still Elna's new Cerafine, Silmic caps, Panasonic FM caps
- Analog Device 8066AR and National Semiconductor op-amps.
Etc.
Modification:
Dedicated modified Jung’s low noise power supply for Clock and DAC (seperate analog and digital part of Wolfson WM8740 DAC chip).
Dedicated modified Jung’s low noise power supply for analog stage.
Using external power supply with toroid transformer, Onkyo proprietary bank capacitors, double module of Jung's power supply.
To be continue...
NEXT: Onkyo A-9555 digital amplifier modification..
Babang Hikmawan
